Crafted from lightweight yet super-strong waterproof fabric, the Pet Tube Pet Tunnel Carrier makes traveling with your pets a breeze. Smart and stylish, each carrier comes in a useful tube shape. The large size can be used at one-third, two-thirds, or full-length as required, taking into account space constraints on the back seat. Simply adjust the Velcro tabs. This waterproof tube features safety belts and an anti-scratch flap door. It's sleek in silver and black and will allow you to travel freely with pets up to 24 inches tall. The small will allow you to travel with pets up to 18 lbs. Its compact size provides room for suitcases, travel supplies, and even another family member on the backseat.