Mountain Hardwear Crater Lake Heavyweight Half Zip Pullover – Women's UPF 50+ Fleece-Backed Sun Shirt

Wore this on a week of hiking above 10,000 feet and never once worried about sun exposure. The fleece backing is surprisingly warm without bulk, and the half zip vents well when I heat up on climbs. Fit is true to size over a base layer.

Really soft inside and blocks the sun nicely. Only wish the sleeves were a touch longer.

Bought this for morning trail runs in the fall and it has become my go-to. The fabric feels substantial but breathes, the thumbholes keep sleeves in place, and it still looks good enough for grabbing coffee after. No odor issues after multiple wears.

I'm 62 and get cold easily on winter walks. This pullover under my shell keeps me toasty and the UPF rating gives me peace of mind. The zipper is easy to operate even with gloves on.

Nice quality and the fleece lining is cozy, but I'd recommend sizing up if you plan to layer underneath. Colors are lovely though.

Obsessed! The fabric is so soft and it keeps me warm on chilly hikes.

The torso fit was fine but the sleeves hit way past my wrists and the cuffs felt tight. Quality seems good, just not the right cut for my proportions.

I've owned several sun shirts that are basically thin t-shirts. This heavyweight version is different — the fleece-backed fabric blocks sun AND provides real warmth. Used it skiing as a mid-layer and hiking in shoulder season. The half zip gives good temperature control and it hasn't pilled after a dozen washes. Highly recommend for anyone who burns easily but hates being cold.