ReimaTec pants are waterproof, windproof, and breathablejust like outdoor and hiking clothes for adults. The two surface fabrics chosen for use in this model are super durable. When worn with weather-appropriate base and mid-layers, the Kokosi pants can be used almost year-round! The interior features a thin polyester lining. - D-sizing: a more spacious fit - All seams are taped for complete waterproofing - Reinforced fabric at the leg ends and seat area - Outer fabric is treated to repel dirt - One zippered pocket - Adjustable elastic waistband - Elastic leg cuffs - Machine washable at 40°Cdo not use bleach or fabric softeners The product is free from fluorocarbons, and the fabric is bluesign-certified. Growth allowance: 6 cm All Reima products are designed to grow with your child. Choose the size based on your childs height, and the product will likely fit throughout the entire season! *Kokosi* is Finnish for "your size".