Apple Watch Band Size Guide: One Elastic Band Fits 38mm–49mm
No more guessing between 38mm, 40mm, 41mm, 42mm, 44mm, 45mm, 46mm, and 49mm cases — Braxley's elastic bands only come in two sizes, and we'll show you which one is yours.
Braxley elastic bands come in only two sizes — Small Watch and Large Watch — and one size fits every case from 38mm up to 49mm, so your Apple Watch model, not your wrist, decides which band you need.
Check the size chart below to match your case mm or Apple Watch model to the right band.
Case Size, Not Wrist Size, Decides Your Braxley Band
Braxley bands are cut from stretchy woven elastic, so they're built to flex around your wrist rather than clamp to an exact measurement — think sweatpants for your wrist, not skinny jeans. That's why we only ever need two sizes, Small Watch and Large Watch, instead of a dozen wrist-circumference options.
The size that matters is your Apple Watch case, not your wrist. Every Braxley band size maps to a case width in millimeters — but mm alone isn't always the full story. Some sizes, like 42mm, point to different Braxley sizes depending on which Apple Watch Series you own, so it pays to confirm your model before you order.
Organic Cotton And Sport Elastic Fit The Same Way
Whether you pick a sport elastic band (polyester) or an organic cotton weave, the sizing logic doesn't change — both materials stretch to fit the same Small Watch and Large Watch ranges. The cotton weave has a touch more structure and a matte, fabric-forward look, while the polyester elastic feels closer to swimwear and dries faster after a sweaty workout.
Both the sport elastic and organic cotton lines are offered in Small Watch and Large Watch sizing, so your case size — not the material you prefer — is what determines the size you add to cart. Pick your look first, then match the size using the charts below.
The Small Watch Band Covers 38mm, 40mm, 41mm & Series 11's 42mm
If your Apple Watch case measures 38mm, 40mm, or 41mm, grab a Small Watch band. The exception is the new Series 11, whose slimmer 42mm case also takes the Small Watch size — so check your Series number if your case reads 42mm before you order.
Shop Small Watch Colors
The Large Watch Band Covers Series 1–3's 42mm Through 49mm Cases
Series 1–3's 42mm case, plus every 44mm, 45mm, 46mm, and 49mm Apple Watch (including Ultra), takes the Large Watch band. It's the same elastic stretch, just sized up to fit the bigger case and longer wrist range.
Shop Large Watch ColorsApple Watch Series To Band Size
SE matches Series 4–6 sizing; Ultra/Ultra 2's 49mm case takes Large Watch. Series 11 flips the old 42mm rule to Small Watch.
| Series | Case Sizes | Band Size |
|---|---|---|
Apple Watch Series 1–3 |
38mm | Small Watch |
Apple Watch Series 1–3 |
42mm | Large Watch |
Apple Watch Series 4–6 |
40mm | Small Watch |
Apple Watch Series 4–6 |
44mm | Large Watch |
Apple Watch Series 7–9 |
41mm | Small Watch |
Apple Watch Series 7–9 |
45mm | Large Watch |
Apple Watch Series 11 |
42mm | Small Watch |
Apple Watch Series 11 |
46mm | Large Watch |
Key Sizing Takeaways
- —Braxley elastic bands come in just two sizes — Small Watch and Large Watch — no dozen-option size chart required.
- —Case size, not wrist size, determines the right Braxley band for your Apple Watch.
- —A 42mm Apple Watch needs a Large Watch band on Series 1–3 but a Small Watch band on Series 11.
- —Small Watch bands fit 38mm, 40mm, and 41mm cases, plus the new Series 11 42mm case.
- —Large Watch bands fit 42mm (Series 1–3), 44mm, 45mm, 46mm, and 49mm Apple Watch cases.
- —Organic cotton and sport elastic Braxley bands use the same Small Watch and Large Watch sizing.
Apple Watch Band Size FAQs
Still unsure? Match your Series and mm below.
What size band fits a 40mm Apple Watch?+
A 40mm Apple Watch case takes Braxley's Small Watch band, whether it's a Series 4–6 model or an SE — this size also covers 38mm and 41mm cases, so you only need to remember one band size for the smaller case family.
What size band fits a 42mm Apple Watch?+
A 42mm Apple Watch case takes the Large Watch band if it's a Series 1, 2, or 3 model, but takes the Small Watch band on the newer Series 11 — the case looks the same size in mm, so checking your Series number is the only way to be sure.
Is a 40 mm Apple Watch band the same as a 40mm one?+
Yes, '40 mm' and '40mm' describe the exact same Apple Watch case size, and it always pairs with Braxley's Small Watch band — the space in the measurement doesn't change the sizing.
What size band fits an Apple Watch 41mm case?+
A 41mm Apple Watch case, found on the Series 7, 8, and 9 models, takes Braxley's Small Watch band — the same band that fits 38mm, 40mm, and the Series 11's 42mm case.
Does one Braxley band fit both 44mm and 45mm Apple Watches?+
Yes, both 44mm and 45mm Apple Watch cases take the same Large Watch band, since Braxley's elastic weave stretches comfortably across that entire size range without needing a separate SKU.
Which band size fits an Apple Watch Ultra?+
The Apple Watch Ultra's 49mm case takes Braxley's Large Watch band, the same size used for 42mm (Series 1–3), 44mm, and 45mm cases — one stretchy band, no extra-large SKU needed.
Do organic cotton and sport elastic Braxley bands fit differently?+
No, organic cotton and sport elastic Braxley bands use identical Small Watch and Large Watch sizing — the only difference is texture and feel, with cotton offering a matte fabric look and elastic drying faster after a workout.
