... 10 years' experienceFree design all the time100% silicone rubber, non-toxic,harmless,eco-friendlyWater Resistance, free to take swimming, 30 M water ... size: 50*45*50cmGW:16KGS,NW:17KGSdelivery timeSample 7-10 days ,mass production within 20 daysProduct information:Features: ... Mac OS 8.6 and above1.100%manufacturer with more than 10 years' experience2.materials are 100% silicone rubber, non-toxic, ...