Product Description Boardwalk · Stackable silicone ring · 4mm · 94-year lifetime guarantee Groove Life makes silicone rings in Spring Hill, Tennessee, with inner airflow channels for breathability and a 94-year No-BS lifetime guarantee. Key Benefits Inner airflow channels (Groove signature) for breathability and moisture wicking Medical-grade silicone — flexible, hypoallergenic, low-profile Width: 4 mm — designed for stacking with other Stackable / Aspire bands Designed for active women — nurses, moms, athletes, hairstylists 94-Year No-BS Lifetime Guarantee Built for Active woman — nurse, mom, athlete, hairstylist, healthcare worker — who wants a flexible, safe alternative to a metal ring without sacrificing color or pattern variety; designed to stack with other 4mm Stackable / 6mm Aspire bands. Product Details Line: Stackable Width: 4 mm Pattern: Boardwalk Material: Medical-grade silicone (FDA-compliant) Inner airflow channels for breathability Gender: Womens Origin: USA (Tennessee) Warranty: 94-Year No-BS Lifetime Guarantee