Compatibility - Compatible with 42mm/44mm Apple Watch models including SE 2022 and SE 2020, Series 6 2020, Series 5 2019, Series 4 2018, Series 3 2017, Series 2 2016, and Series 1 2015. The Apple Watch and Screen Protector are not included. Material and design - Premium soft TPU silicone with a breathable, skin-friendly surface. The one-piece design provides a comfortable wearing experience while allowing you to personalize your smartwatch to match your mood and outfit. Adjustable length - Classic metal buckle clasp enables easy on-the-fly length adjustment. Fits 5.7 to 8.8 inches (145 to 225 mm) wrists and includes 10 adjustment holes. Please confirm your wrist size and choose the correct watch model and size before purchase. Protection and installation - Rugged bumper design offers shock absorption and raised bezel protection to help shield the screen from bumps and accidental drops. The bumper cover is secure and designed not to detach during use. Easy to install on your Apple Watch. Use scenarios - Everyday wear: comfortable all-day use at work or during leisure activities. - workouts and active days: breathable silicone helps prevent skin irritation during exercise. - travel or outdoor activities: robust bumper protection adds an extra layer of security when you’re on the move.