Lightweight 2.5-layer ripstop REI-Elements® nylon is waterproof, breathable and windproof to 60 mph; seams are sealed to complete the protection Internal waist adjustment lets you set the fit but still easily adjust it as your child grows Articulated knees ease movement; reinforced fabric helps resist abrasion Elastic cuffs help pants slip easily over boot tops Reflective trim offers increased visibility in low light Write-on ID label inside Made to reflect our love for people and the planet through use of bluesign®-approved materials, which conserve resources and protect the health of people and the environment REI is Climate Neutral Certified; as we work to actively reduce our footprint, we measure annual carbon emissions and purchase an equivalent amount of verified carbon credits Contains materials that meet the bluesign® criteria