【Compatible】These silicone bands are perfectly compatible with Fitbit Ace 3. Perfectly fits wrists from 4.8 inches-7.1 inches. Includes: 1*silicone blue strap. 1*TPU clear yellow strap. 【Quality Material】Blue strap is made of flexible silicone material and plastic buckle. Transparent yellow strap is made of soft crystal TPU. Adjustable TPU strap is breathable and light weight. Protects children's skin from irritation, sweat-proof, wear-resistant, and protects Fitbit Ace 3 from dust and scratches. 【Full coverage protection with raised bezel】The combination of strap and bumper provides stable and reliable protection for your watch. The raised edge design provides all-around protection for your watch against scratches, bumps and accidental drops. 【Lightweight】Adjustable TPU strap is breathable and light weight. Perfect for men or women for sports, business and any outdoor activities etc. 【Seamless Fit and Adjustable Buckle】 Snap the watch into place and the adjustable buckle locks securely and precisely onto your fitbit watch; all buttons are freely accessible to ensure greater sensitivity. The safety clasp makes the strap easy to adjust in length. Fits most wrist sizes from 4.7'' to 7.5''.