PU Leather + Silicone Smart Bracelet Replacement Strap for Apple Watch Series 4/5 40mm/Series 3/2/1 38mm - Yellow Eco-friendly soft silicone core + exterior genuine leather, as well with wavy inner silicone face for better airflow and Sweatproof Non-toxic, allergy-free, breathable and comfortable to wear Metal buckle closure for easy wearing or taking off Holes on the strap makes it easy to adjust according to your size An ideal watch strap replacement for your old, broken one Compatible with: Apple Watch Series 5 40mm Apple Watch Series 1 38mm Apple Watch Series 2 38mm Apple Watch Series 3 38mm Apple Watch Series 4 40mm Package included: 1 x PU Leather + Silicone Smart Bracelet Replacement Strap Watch band only, other things not included