Sherpa-on-Wheels Bag makes traveling with your small pet absolutely effortless. Recessed wheels begin a soothingly smooth and comfy lined ride. A cozy travel tray lined with washable faux lambskin slides in and attaches with Velcro to make a soft fluffy trundle bed that you'll wish you could lie in! For convenience you can place your pet inside through the U-shaped zippered top opening or at either end. Large zippered pocket. Two large flaps on either side and one at the end roll up to reveal mesh windows for ventilation and for a view of what's outside. You'll both be stylish in this quilted bag with brass hardware. Inside leash ring. Photo ID tag. Large rear zippered pocket to hold all your essentials. Additional Travel Trays are available. size : Medium 18" L x 10.5" H x 11" W Large 20" L x 11.5" H x 11.75" W color : Black