What size band does a Kingsbury Varsity GT take?

21mm. The spec table on every Varsity GT page prints Strap Width at Lugs (mm): 21.00, and the body copy adds the taper: These sporty bands are 21mm wide and taper down to 18mm at the buckle. A 22mm strap will not fit and a 20mm strap will slop around; the size is 21mm.

What size band fits the Kingsbury Discovery Field?

21mm, printed by the brand as Strap Width at Lugs (mm): 21.00. The Discovery Field ships on a stainless steel bracelet, and its page prints no lug-to-lug line at all (the body paragraph is a word-for-word carryover from the Atlantic Diver page, so we do not count it as a Discovery measurement).

Which Kingsbury watches take a 20mm band?

22 of the 37 watch SKUs: all three MS3 Battalion, all three MS4 Regiment, all three AMBASSADOR, all six RENDITION, all six Monarch II, and the single Majesty reference. Each prints Strap Width at Lugs (mm): 20.00, except Majesty, whose label drops the s: Strap Width at Lug (mm): 20.00.

Which Kingsbury watches take a 22mm band?

8 of the 37: both Atlantic Diver references, all three Atlantic references, and all three Dark Water 300 references. The Dark Water 300 body copy also prints its taper: The width of the strap is 22mm and tapers down to 20mm, which adds a sleek look no matter what the environment.

Will a 22mm strap fit a 21mm Kingsbury?

No. A 22mm strap is 1mm wider than the lug gap and will not seat; 21mm is the correct size for the Varsity GT, Varsity Sport and Discovery Field. Note that at build time the brand's own strap shop sells no 21mm product at all: its 26 straps and bands list 20mm and 22mm sizes only, so a 21mm owner must buy from the broader strap market.

Do Kingsbury straps taper?

The 21mm rally straps on the Varsity GT do: These sporty bands are 21mm wide and taper down to 18mm at the buckle. The Dark Water 300 rubber strap tapers 22mm to 20mm in the brand's own words. The Monarch II leather strap stays flat at 20mm and the brand prints its length too: measures 125mm/80mm, large enough to accommodate most wrist sizes.

Is there an official Kingsbury band size chart?

No. Kingsbury prints the width only inside each product page, once in the body copy and once in a DETAILED WATCH SPECS block, with no consolidated table on the site. The large strap-size databases have no Kingsbury entry (watchbands.ai's brand index does not list it), and search results return generic lug-width guides, none of which carries the model-by-model rows.

Why do some cells in the chart say not printed?

Because the brand does not print them. The Discovery Field, Dark Water 300 and Majesty pages carry no lug-to-lug line in their spec blocks, and this chart records the absence instead of estimating from case photos or third-party listings. Where the page prose contradicts the spec table (the Discovery Field's carried-over Atlantic Diver paragraph), the spec table governs and the prose is flagged.

Kingsbury band size chart: all 37 watches tabled verbatim, and the odd 21mm trap explained

Kingsbury Watch Co. is the brand that made 21mm a purchase consequence. Of the 37 watch SKUs in its product feed at build time, 7 take the rare 21mm band: every Varsity GT, every Varsity Sport, and the Discovery Field, each printing Strap Width at Lugs (mm): 21.00 in its own spec block ^[1] ^[2] ^[3]. Around them sit 22 SKUs at 20mm and 8 at 22mm, and here is the part that costs money: the brand's own strap shop sells 26 straps and bands in 20mm and 22mm and not one 21mm product ^[38] ^[43], so the seven 21mm watches cannot be re-strapped from the brand's own catalog at all. Every number below is quoted word for word from the brand's pages, fresh at build time.

Quick answer: 21mm for Varsity GT, Varsity Sport and Discovery Field. 22mm for Atlantic Diver, Atlantic and Dark Water 300. 20mm for MS3 Battalion, MS4 Regiment, AMBASSADOR, RENDITION, Monarch II and Majesty. Do not buy a 22mm strap for a 21mm watch; it will not fit. Check the row before you buy.

The chart: 12 model lines, 37 watch SKUs

Model line	Lug width	Case (mm)	Lug-to-lug	Thickness	References cited
Varsity GT	21mm	41.0	48	11.0	[1], [2], [3]
Varsity Sport	21mm	41.0	48	not printed	[4], [5], [6]
Discovery Field	21mm	41.5	not printed	not printed	[7]
Atlantic Diver	22mm	41.0	49.5	14.8	[8], [9]
Atlantic	22mm	40.0	46	12.0	[10], [11], [12]
Dark Water 300	22mm	43.0	not printed	not printed	[13], [14], [15]
MS3 Battalion	20mm	39.0	48	12.0	[16], [17], [18]
MS4 Regiment	20mm	39.0	46	12.0	[19], [20], [21]
AMBASSADOR	20mm	35.0	47	10.5	[22], [23], [24]
RENDITION	20mm	39.0	47	11	[25], [26], [27], [28], [29], [30]
Monarch II	20mm	40.0	49	10.0	[31], [32], [33], [34], [35], [36]
Majesty	20mm	41.00	not printed	12	[37]

Case and thickness columns quote the spec-block values exactly as printed, decimals included (Majesty prints 41.00, AMBASSADOR prints 10.5 in a line misspelled Case Heigh (mm)). Lug-to-lug comes from the spec block where one exists and from the brand's own body-copy sentence for Rendition; the four not printed cells are absences on the brand's pages, not gaps in our pull ^[38].

The odd 21mm: seven watches the strap trade understocks

Odd widths are where strap buying goes wrong, and Kingsbury put three of its model lines on 21mm while the rest of the catalog sits on the even 20mm and 22mm sizes. The Varsity GT states it twice, spec block first: Strap Width at Lugs (mm): 21.00, then body copy: The Varsity GT has a 41mm diameter and measures 48mm from lug to lug. ^[1] The rally strap that ships on it is quoted with its taper: These sporty bands are 21mm wide and taper down to 18mm at the buckle. ^[1] The Varsity Sport prints the same pair with its own name in the sentence: The Varsity Sport has a 41mm diameter and measures 48mm from lug to lug. ^[4] And the Discovery Field, the brand's field watch on a stainless steel bracelet, prints Strap Width at Lugs (mm): 21.00 with Case Size/Diameter (mm): 41.5 and no length line at all ^[7].

The purchase consequence is concrete. A 22mm strap is a millimeter too wide for those lugs and will not seat without forcing; a 20mm strap leaves a visible gap on each side. And the brand's own accessories catalog is no help at build time: all 26 strap and band products in the feed (the Frankfurt, Normandy, Bristol, Florence, London, Chicago, Barcelona and Palermo leather straps, the Montreal, the Ranger single pass, and the Campus, Neptune and Ambassador steel bands) list their sizes as 20mm and 22mm only ^[39] ^[40] ^[41], 24 of them carrying both sizes and the Montreal and Ranger carrying 20mm alone ^[42] ^[47]. So every Varsity GT, Varsity Sport and Discovery Field owner who wants leather or steel buys third-party, in the size most strap makers treat as an afterthought.

Four label spellings, one catalog

Kingsbury never standardized the spec-block wording, which is how the 20mm fleet hides from careless scrapers. The width line prints as Strap Width at Lugs (mm): 20.00 on the MS3 Battalion, MS4 Regiment, AMBASSADOR, RENDITION and Monarch II pages ^[16], but as Strap Width at Lug (mm): 20.00, singular, on the Majesty ^[37]. The length line splits the same way: Lug To Lug Length (mm): 48.0 on the MS3 Battalion ^[16] against Lug to Lug (mm): 47.0 on the AMBASSADOR ^[22] and Lug to Lug (mm): 49.0 on the Monarch II ^[31], with the Atlantic pair printing Lug To Lug Length (mm): 46.0 and the Atlantic Diver Lug To Lug Length (mm): 49.5 ^[11] ^[8]. The AMBASSADOR block even misspells its thickness line as Case Heigh (mm): 10.5 ^[22], and the MS4 Regiment says it in prose with its own capitalization: The case measures 39 mm in diameter, 46mm lug to lug and a total height of 12MM. ^[19] This chart quotes each spelling as printed; nothing is normalized.

Lug-to-lug, where the lines genuinely differ

The 20mm fleet spreads across 9mm of case length: 48mm on the MS3 Battalion ^[16], 46mm on the MS4 Regiment ^[19], 47mm on the AMBASSADOR (whose body copy agrees: the watch has an overall diameter of 35mm, measures 47mm from lug to lug and sits at just 10.5mm high) ^[22], 47mm again on the RENDITION by the same sentence shape with 39mm and 11mm substituted ^[25], and 49mm on the Monarch II ^[34]. The 22mm fleet runs longer per case size: the Atlantic Diver pairs a 41mm case with 49.5mm (The watch has an overall diameter of 41mm, measures 49.5mm from lug to lug and sits 14.8mm high) ^[8], the Atlantic pairs 40mm with 46mm ^[11], and the 43mm Dark Water 300 prints no length line anywhere, only its taper sentence ^[13]. The Majesty gives diameter and height in prose (The watch has a diameter of 41mm and sits 12mm high) and no length ^[37]. Wrist fit lives or dies on these numbers, not on case diameter.

The Discovery Field paragraph that is not about the Discovery Field

One honesty note that other charts will get wrong. The Discovery Field page carries the sentence The watch has an overall diameter of 41mm, measures 49.5mm from lug to lug and sits 12.8mm high., which is the Atlantic Diver's sentence word for word, on a watch whose own spec block prints Case Size/Diameter (mm): 41.5 and no length line ^[7]. We treat the carried-over paragraph as Atlantic Diver copy, not a Discovery measurement, and leave the Discovery Field lug-to-lug cell as not printed. Its width line is its own and unambiguous: 21mm.

Reference numbers that disagree with their own URLs

Two Varsity Sport pages live at URLs whose reference numbers differ from the titles they print (one handle says 109039 while the page prints Ref.109033; another handle says 10311 while the page prints Ref.101015), and one Atlantic Diver handle says 102001 while the page prints REF.102101 ^[5] ^[6] ^[9]. The chart cites the printed titles, because the printed title is what sits on the page a buyer sees. None of this affects the widths: every Varsity Sport SKU prints 21mm and both Atlantic Diver SKUs print 22mm regardless of the numeral in the handle.

What this page is and is not

Every quote above is contiguous text from a kingsburywatch.com product page, read from a fresh en-US product-feed pull at build time (67 products: 37 watch SKUs and 30 straps, bands, accessories and services) with seven pages re-verified as rendered HTML in a real browser, including one Varsity GT and the Discovery Field ^[38]. The rendered checks matter: merchant feeds can lag the live page, and on every spot check the rendered spec table matched the feed line for line. No prices appear because the feed's price fields are bare numbers we have not rendered-verified. No consolidated Kingsbury band-size chart exists on the brand's site; the width lives one page at a time. watchbands.ai, the largest strap-size brand index, has no Kingsbury entry at build time ^[44], and the generic lug-width guides that rank for the query ^[45] ^[46] carry no Kingsbury rows. WristFit is an independent reference, not affiliated with Kingsbury Watch Co.

Sources

Varsity GT (Ref.1010016), product page, kingsburywatch.com
Varsity GT (Ref.1010024), product page, kingsburywatch.com
Varsity GT (Ref.1010037), product page, kingsburywatch.com
Varsity Sport (Ref.108015), product page, kingsburywatch.com
Varsity Sport (Ref.109033), product page, kingsburywatch.com
Varsity Sport (Ref.101015), product page, kingsburywatch.com
Discovery Field (REF.101028), product page, kingsburywatch.com
Atlantic Diver (REF.102501), product page, kingsburywatch.com
Atlantic Diver (REF.102101), product page, kingsburywatch.com
Atlantic (REF.132028), product page, kingsburywatch.com
Atlantic (REF.102001), product page, kingsburywatch.com
Atlantic (REF.102028), product page, kingsburywatch.com
Dark Water 300 (Ref.10810), product page, kingsburywatch.com
Dark Water 300 (Ref.10311), product page, kingsburywatch.com
Dark Water 300 (Ref.10310), product page, kingsburywatch.com
MS3 Battalion (Ref.101020), product page, kingsburywatch.com
MS3 Battalion (Ref.101019), product page, kingsburywatch.com
MS3 Battalion (Ref.101026), product page, kingsburywatch.com
MS4 Regiment (Ref.101026), product page, kingsburywatch.com
MS4 Regiment (Ref.101020), product page, kingsburywatch.com
MS4 Regiment (Ref.101019), product page, kingsburywatch.com
AMBASSADOR (REF.101008), product page, kingsburywatch.com
AMBASSADOR (REF.101003), product page, kingsburywatch.com
AMBASSADOR (REF.101002), product page, kingsburywatch.com
RENDITION (REF.137043), product page, kingsburywatch.com
RENDITION (REF.134043), product page, kingsburywatch.com
RENDITION (REF.132042), product page, kingsburywatch.com
RENDITION (REF.107041), product page, kingsburywatch.com
RENDITION (REF.104043), product page, kingsburywatch.com
RENDITION (REF.102042), product page, kingsburywatch.com
Monarch II (Ref.134003), product page, kingsburywatch.com
Monarch II (Ref.132003), product page, kingsburywatch.com
Monarch II (Ref.104003), product page, kingsburywatch.com
Monarch II (Ref.103003), product page, kingsburywatch.com
Monarch II (Ref.102003), product page, kingsburywatch.com
Monarch II (Ref.101002), product page, kingsburywatch.com
Majesty (REF.101210), product page, kingsburywatch.com
kingsburywatch.com product feed, 67-product single-request window pulled fresh 2026-09-30T15:08Z
Campus Stainless Steel Band, rendered product page (sizes 20mm/22mm)
Neptune Steel Mesh Band, rendered product page (sizes 20mm/22mm)
Bristol Leather Strap (Black), rendered product page (sizes 20mm/22mm)
Montreal Leather Strap, 20mm only
Kingsbury Watch Straps collection, the brand's own accessories catalog
watchbands.ai brands index, pulled fresh at build time, no Kingsbury entry
CNS Watch Bands: watch lug width by model guide, generic incumbent, no Kingsbury rows
WatchScanning lug width finder, generic incumbent, no Kingsbury rows
Ranger Single Pass Strap, 20mm only