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This product is no longer available, but don't go just yet.


  • Non-pilling polyester fleece draws moisture away from the skin and dries quickly
  • With a UPF 50+ rating, fabric provides excellent protection against harmful ultraviolet rays
  • Mock neck; chin guard; flat seams


View all REI Kids' Long-Underwear Tops

REI membership


Best Use Multisport
Shirt Style Zip-front
Fabric Polyester
Sun-Protective Fabric Yes
Moisture Wicking Yes
Quick Drying Yes
Underwear Weight Heavyweight
Sleeve Length Long Sleeve
Gender Boys'

Size chart