Kid's Trestles 30 Sleeping BagThe Kids' Trestles 30 Sleeping Bag is a roomy, mummy style synthetic bag that performs in cool and damp conditions, thanks to Spirafil high loft insulation. Its unique blend of large, spiral hollow fibers and small polyester fibers provides the exceptional warmth, softness, and compressibility of natural down while increasing moisture resistance. The anatomically shaped footbox minimizes heat buildup and gives kids plenty of room to wiggle their toes,