... thickness acrylic sheet ,with the fiber glass ,resin and stainless steel stand to support the tub . 2. ... ,the lock use high quality with protection system and aslo it has been applied the patent . 3 ... it aslo can be avialable for the surf massage and the airbubble ,LCD compture control . 4. The ... switch ,Dual draining system ,with Anti-slip seat and floor ,and inflatable neck pillow 5. the size is 1010* ...