Woolino Baby Footed Romper Pants, 100% Superfine Merino Wool, 3-9 Months Made of 100% natural, hypoallergenic superfine Merino wool that will keep your child safe, comfortable and dry Comfortable all year round. Merino wool naturally regulates babys body temperature Naturally flame-resistant and free of fire-retardant chemicals usually found in other cotton, micro-fleece and other synthetic baby sleepwear Machine washable and quick drying Ideal for layering or to wear inside a Woolino sleep bag. Buy together with matching Woolino bodysuit