Composed of a polycarbonate bumper and soft, scratch-resistant pur to shield against Damage | Sleek and modern design with precise cutouts ensures zero interference with iWatch Features as well as raised bezel protects your screen | Easy Installation and fully adjustable wristband fits most men, women and even child Size wrists, fitting most wrist sizes: 5.55-7.48 inch (141mm-190mm) | Lightweight materials won’t add bulk or weight to wrist during use, Perfect protect your fitness tracker while outdoor sports or daily working | Compatible with 40mm Apple watch 5 2019 version and Apple watch 4 2018. 360-Day warranty and friendly customer service