Pet Gear Travel Lite Bi-Fold Ramp for Cats/Dogs, Lightweight/Portable, Safety Tether Included, Rubber Grippers for Stability Slip-resistant surface provide sure footing, not suitable for rear of vehicle loading as the angle of the ramp will be too steep for the pet Easy fold for compact storage Built in handle for portability Rubber grippers on bottom help keep ramp steady Measures 42 x 16 x 4-inches; excellent for use in heights up to 20-inches