Slept in this liner for three nights in the low 40s and it genuinely added warmth without bulk. The Thermolite Pro fabric feels silky against the skin and packs down to nothing in my pack.
Ella E.★★★★★
Didn't expect much from a liner this thin, but the Thermolite Pro fabric genuinely adds warmth without the bulk. It packs down to the size of my fist and hardly registers on the scale.
Harper★★★★★
Used this liner on a cold night in the mountains and it genuinely kept me warmer than my bag alone. The Thermolite Pro fabric feels light but traps heat better than I expected.