WATERPROOF & DURABLE MATERIAL - The outdoor bathtub cover is made of durable 210D Oxford fabric, which is waterproof, wear-resistant, can withstand various climatic conditions, and does not easily fade. It is also easy to clean and reusable.SURPER-LARGE SIZE - Our hot tub pool cover measures 78.7x78.7x11.8 inches / 200x200x30 cm, its generous size provides full coverage and fits most hot tub pools, the pool bottom has an adjustable drawstring design that can be adjusted according to the size of the pool, and more fit the pool. KEEP POOL CLEAN - The use of an outdoor tub pool cover can keep the pool clean for a long time. You do not use the pool to isolate fragments, leaves, dust, petals other garbage for the time being, to minimize the need for frequent cleaning, thereby saving time and energy.