neoprene notebook bag, 2.5mm EVA,inner T cloth,5# nylon zip good quality of elasticitym nice appearance and rich colour notebook bag,computer bag2.5mm SBR,inner T cloth,outer lycra clothgood quality of elasticitymnice appearance and rich coloursyour log can be printed on itdurable and supply the best protectionlet you feel smooth and enjoyable 3mm SBR neoprene note bag