Measure straight across the outside of the bottle body.
in
mm
How to measure + size chart

Measure straight across the centre, from one outside edge of the bottle body to the other. Skip the neck, cap and recessed inner base.
Check the part where the band will sit too. If the bottle tapers or has an unusual shape, ask us before ordering.
| Band | Inches, approx. | Millimetres |
|---|---|---|
| S · Small | 1.77–2.17 | 45 to under 55 |
| M · Medium | 2.17–2.76 | 55 to under 70 |
| L · Large | 2.76–3.35 | 70 to under 85 |
| XL · X-Large | 3.35–4.13 | 85 to 105 |
Inch conversions are rounded for display. If your inch entry matches a rounded size limit, enter your measured millimetres to confirm. At 55, 70 or 85 mm, use the next size range.
Read the full size guide