NAF Slim 3.3kgNAF Slim 3. 3kg Slimline If your horse is prone to weight gain or he carries too much condition its likely you restrict his diet and grazing. Now, with new Slimline, you no longer have to compromise on his important nutritional needs. Formulated especially for horses and ponies who struggle to keep weight off, Slimline is designed to make up the shortfalls of a restricted diet, and more. NAF recommend that Slimlineis fed as part of a 'calorie