Outdoor Research ActiveIce Spectrum Sun Mens Short Sleeve T-Shirt Size:XL The packsack is completely seam-welded

The packsack is completely seam-welded and has a roll-top closure with carabiners

and for those who like to stay out after dark

Featuring our bold Cross the Mountain message

It’s loaded with storage features that have been strategically chosen to provide maximum utility for minimum weight

NFPA 1983 General Use

Outdoor Research ActiveIce Spectrum Sun Mens Short Sleeve T-Shirt Size:XL The packsack is completely seam-weldedThe ActiveIce Spectrum Sun Long Sleeve Tee is built with thermoregulating ActiveIce technology and bluesign approved materials, perfect for keeping body temperature in check while hiking, backpacking, climbing, or setting up camp. This tee is built with an ultra comfortable, breathable, and quick drying polyester blend treated with our proprietary ActiveIce technology. ActiveIce reacts to your body's rising temperature by cooling down your core,