b.ring Sizing Kit

Find your b.ring size before you buy

Smart rings fit differently from regular rings. The b.ring Sizing Kit includes try-on sizers for US sizes 7 to 12, so you can find the right size for b.ring G2 or b.ring Pro at home.

How to use

• Wear a sizer on the finger you plan to use, ideally for a full day including sleep.
• Pick the size that feels snug but comfortable and slides over your knuckle.

Ring sizes can't be exchanged after purchase, so we recommend using the kit first.