Product Name:Fanless laptop cooling padModel No.:PCM3628BLMaterial:Outlayer:PolyesterInerlayer:PVCCooling time:8 hoursSize:36*28cmWeight:0.55kgNotebook available size:12-17 inchFilling material:Phase change materialTemperature constant:30 CentigradeFeature:1Environmental friendly2Non-toxic material without power supply, environmental friendly and economical.3Heat-shielding design4.The fabric is soft and comfortable5It will make you feel cool when you put the laptop on your legs.Warning:Do not put this product under strong sunlight. We aslo can provide OEM service.