This case not a universal laptop bag,each case are only suitable for some especially laptop models.It is especially designed for 15.6" Lenovo ideapad 330s 15 330s-15IKB / ideapad 530s 15 530S-15IKB / ideapad S540 15 S540-15IWL / ideapad S340 15 S340-15IWL S340-15API Laptop. Warning: NOT compatible with 14 inch Lenovo IdeaPad 330s 14 330s-15IKB Laptop and Lenovo IdeaPad 120S/330/130/320/320s/310/310s/300/520/520s/510/510s/500 laptop and Lenovo thinkpad/Flex/Yoga series laptop and other brands laptop {{Warning:Most of returned because of choosing wrong model,please confrim your laptop model}}. This protective cover is made of the high-quality PU leather,characterized by the beautiful appearance and fine hand feeling;the inner-layer soft cashmere can better protect the laptop. Unique design with two elastic rubber bands could solve the problem of loose cover effectively in the process of using laptop (This case not support "Tablet model"). Unique liner design for laptop cooling,this case do not affect the heat dissipation of the laptop.Our store have 500+ laptop models cases,search more laptop models's case,please search "Alapmk + your laptop model".