Easy to Install & Perfectly Compatible: Charlam 6 pack replacement straps are compatible with Fitbit Versa 3/ Fitbit Sense/ Fitbit Versa 4/ Fitbit Sense 2 smartwatch. Easy to install and remove, NO tool required. It will lock into your fit bit Sense 1&2 and Versa 3&4 smartWatch precisely and securely.(NOTE: NO Smartwatch included ) Premium Material: The sport wristband compatible with Fitbit Versa 3 strap/ Fitbit Sense strap women men are made of premium TPU material, comparable to the original straps, durable, dust-proof, water-resistant, soft, and lightweight, bring you comfortable wearing experience, perfect for all day workouts and regular wear Two Size Available: Small size for 5.9"-7.4" (150mm-190mm) wrist, large size for 7.1"-8.7" (180mm-220mm) wrist. Multi-adjustable holes allow the free adjustment and safety for your Versa 3/ Sense, and provides maximum comfort and breathability to your wrist Various Fun Colour Options: These wrist bands compatible with Versa 3 straps, Versa 4 strap, Sense strap and Sense 2 straps are available in many rich and muted colours. Every colour is stylish and on the trend, give your Fit bit Sense 2 and Fit bit Versa 4 an elegant and advanced texture. Use color to embellish your life Suitable for Multiple Occasion: Charlam watch bands for Fitbit Versa 3 straps are suitable for women men girls boys in running, swimming, cycling, climbing, hiking, camping, traveling and other outdoor activities, as well as daily life and office. You can choose your favorite color combination to fit your outfit and mood. A wonderful gift for family and friends during Birthday, Father's Day, Mother's Day, Valentine's Day, Children's Day, Thanksgiving Day, Christmas Day