Usage Tips:hot tub cover Material:Made of weatherproof material, which is more waterproof than normal material 420D or 210D,can withstand up to 2000 Pa water pressure.Its product life is more than 2 times higher than other tire covers.Weatherproof and Water-: for anything Mother Nature can throw at you!All Weather Protection! The cover is designed to protect your outdoor hot tubs from dirt, dust, rain, snow, ice and extreme temperatures.Air vents:There are two air vents with mesh barriers promotes air flow to reduce inside condensation and wind lofting. In addition,you will be surprised at how easily the cover slipped over hot tubs with two handles.Wind-:All round drawstring bottom with cord locks for added security to 't blow away in the wind. Material:Made of weatherproof material, which is more waterproof than normal material 420D or 210D,can withstand up to 2000 Pa water pressure.Its product life is more than 2 times higher than other tire covers. Weatherproof and Water-: for anything Mother Nature can throw at you!All Weather Protection! The cover is designed to protect your outdoor hot tubs from dirt, dust, rain, snow, ice and extreme temperatures. Air vents:There are two air vents with mesh barriers promotes air flow to reduce inside condensation and wind lofting. In addition,you will be surprised at how easily the cover slipped over hot tubs with two handles. Wind-:All round drawstring bottom with cord locks for added security to 't blow away in the wind. Model Number: Round bathtub cover suitable for: Swimming pool, spa, hot tub colour:Black Material:190 coated silver polyester taffeta size:210 x 30cm Package Contents: 1 x hot tub cover Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.