I bought one of these 13 years ago, the half size, to connect dog door with the outside. Used by three dogs, often simultaneously, 65 pounds, 60lbs and 45lbs. Stood up to hot tropical sun that beats down on it every morning. Has been scrubbed clean numerous times and it still holds its traction. Just bought a second ramp for a doggie pool. Attached it to the Skamper Ramp. The doggie pool is a heavy duty stock tank and PetStep's rubberized grip grabs the stock tank and leans at perfect angle from ground to pool. Skamper Ramp is tied to a couple utility holes at top of PetStep. So dogs have both an entry and exit from the pool. The PetStep ramp is so secure that my 15 pound dog sits at the top before deciding whether to go swim. And my 27lb dog who doesn't like water can climb up PetStep to drink pool water, then turn around and walk back down the ramp. Both entry and exit ramps lift up easily when it's time to cover the pool. PetStep HalfStep Ramp is a solid, secure, long lasting product.