Getting kids dressed for winter activities can work up a sweat but the effort is well-worth it with the REI Co-op Midweight Long Underwear Bottoms These bottoms are made with stretchy polyester that is moisture-wicking and fast-drying The fabric has a super-soft finish and is rated UPF 50 for protection against UV rays in case the day ends with them ditching their snow pants to run around in theseampnbspPRODUCT CONDITIONThese REI Co-op Midweight Long Underwear Bottoms - Boys are in Good condition Item shows signs of wear Some hair and dirt is present but can be cleanedTECH SPECS-ampnbspampnbspampnbspampnbspampnbspampnbspampnbspPolyester fabric moisture-wicking and dries quickly-ampnbspampnbspampnbspampnbspampnbspampnbspampnbspPeached finish creates a super soft feel-ampnbspampnbspampnbspampnbspampnbspampnbspampnbspUPF 50 rating-ampnbspampnbspampnbspampnbspampnbspampnbspampnbspGusseted crotch flat seams elastic waist-ampnbspampnbspampnbspampnbspampnbspampnbspampnbspFabric 95 polyester5 spandex-ampnbspampnbspampnbspampnbspampnbspampnbspampnbspMidweight-ampnbspampnbspampnbspampnbspampnbspampnbspampnbspInseam 255 inches