Made of viscose from bamboo, these Perlimpinpin sleeves can add a little comfort when temperature becomes more chilly. Perfectly adapted to fit under Perlimpinpin's 1 tog or 2,5 togs bamboo sleep bags. To add a little warmth when baby needs it. Machine wash cold water with similar colours. Do not bleach. Hang to dry. Jersey 70% Viscose from Bamboo\30% Cotton. Filling 100% Polyester. | Perlimpinpin Bamboo Sleeves Ivory, Cotton/Polyester, 0-6 mo