Acrylic bathtub, there are more than 3 layers of fiber glasses inside and timber block under each side of bathtub for strong thening.You can choose what color and size you like. Size:1500*700*360mm 1600*700*360mm 1700*700*360mm 1400*700*390mm 1500*700*390mm 1600*700*390mm 1700*700*390mm 1700*800*390mm.