Skip to content

FREE SHIPPING OVER $99 · 30-DAY RETURNS

Ring Science Support About

Sizing kit Cart 0

Ring Science Support About Sizing kit Cart (0)

Sizing kit box, open

X3 Sizing kit

7 sizers, US 7–13. Free.

Hand

Left handRecommended if right-handed Right handRecommended if left-handed

Finger

Index Middle Ring Other

Measurement instruments for people who would rather know than guess.

PRODUCT

HSRing
Sizing kit
App
Cart

LEARN

The science
Sleep guide
Research
About us

SUPPORT

Help centre
Shipping
Returns
Contact
Account

© 2026 HANDSPRING TECHNOLOGIES INC.

STORE PRIVACY APP PRIVACY STORE TERMS APP TERMS WARRANTY ACCESSIBILITY