I-SMILE Fitbit Charge 2 Bands, Original Version Adjustable Colorful Silicone Replacement Wristhband with Secure Buckle for Fitbit Charge 2, 10 Colors Available ALTERNATIVE SIZE - Large for 6.7" - 8.1"(170mm-205mm) wrist, Small for 5.5" - 6.7"(140mm-170mm) wrist. HIGH QUALITY MATERIAL - Made of flexible and durable elastomer material with surgical-grade stainless steel buckle. BUCKLE DESIGN - The Charge 2 wristband with a Stainless Steel Buckle to ensure your watch secure during strenuous exercise and a strap holder to secure the extra length. COMFORTABLE AND FLEXIBLE - Soft Silicone wristband, Inside of band is soft against your skin. Precise cut holes to fit well for most wrist. WARRANTY - 30 days of free money-back & 12-months of free replaced.(For the replacement Band)