Extra Large Turtle Topper Basking Platform for Aquatic Turtles 40B/75G, Above Tank Turtles Sunbathing Dock Anti-slip Ramp Aquatic Reptile Climbing Pier Resting Terrace with Feeding Area Accessories. Save Money & Energy & More WarmOur acrylic turtle basking platform with a thickness of 3mm allows the UVB rays to pass through the acrylic for your lovely turtle.