We strongly believe this is the most important component of the wheelchair, as this is what comes in contact with your dog. Therefore, each support sling is custom made one at a time for each dog. Our hybrid support sling (for dogs over 80 lbs) combines the benefits of a closed cell foam leg ring, which provides great pelvic support, with the comfort and flexibility of a soft, durable, neoprene. This hybrid support sling greatly benefits dogs with some remaining mobility, as well as being supportive enough for dogs that have lost complete use of the rear legs. This sling is soft, yet sturdy and supportive. The attachment system that we have put in place limits the “swinging” that can occur with some of these soft neoprene saddles. In addition, we have added support sewn in place in conjunction with the super thick, 4 mm neoprene. This is the first support system of its kind in the industry.