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  • Made of a durable yet soft polyester/spandex blend that wicks sweat and dries fast
  • Tall neck extends coverage; zipper with chin guard lets you adjust ventilation
  • Flatseam construction, raglan sleeves and side gussets are comfortable as you move
  • Extended back hem stays tucked in when you lean forward
  • UPF 50 sun protection
  • Fitted


View all REI Co-op Kids' Long-Underwear Tops

REI membership


Best Use Multisport
Shirt Style Zip-front
Fabric 89% polyester/11% spandex
Sun-Protective Fabric Yes
UPF Rating 50
Moisture Wicking Yes
Quick Drying Yes
Underwear Weight Midweight
Sleeve Length Long Sleeve
Gender Kids'

Size chart

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Do you have a size chart for kid's clothing? My little one is between a 4T and a 4 but I do not want him swimming in this. 

Asked by: BobbyBob
We do have a size chart for REI kid's clothing. Please see the size chart attached to the item below. Thank you for bringing this to our attention. We will update the information on as soon as possible.
Answered by: REIservice
Date published: 2017-01-05

How is this long underwear shirt similar to or different from the REI Midweight Base Layer Half-Zip Top - Women's in Asphalt? I received an XS of the REI Midweight Base Layer Half-Zip Top - Women's as a gift but found that it was too big.

Asked by: SAH0212
The material will be the same as your women's top, however, the cut will be more boxy and not tailored for a women's physique.
Answered by: REIservice
Date published: 2017-01-02
  • y_2017, m_5, d_23, h_24CST
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