Warm in winter, cool in summer... Bowron infant care range combines the necessity for practicality, durability, and safety with the desirability of softness, comfort, and luxury from a natural material. 100% lambskin upper, front pack liner, designed especially for Baby Bjorn front packs. The natural insulation properties of 100% lambskin are proven to reduce chaffing and irritation, wool absorbs moisture and facilitates a comfortable body temperature. Moisture manager.