The OMM Swift arm warmers are an effective lightweight piece of insulation. Carry these along with you on the trail, they add extra protection for little weight penalty. They are comfortable to wear and offer an alternative to carrying extra layers of clothing.
OMM says:
Stretch fleece arm warmers for a lightweight option to add extra warmth when needed. The Swift arm warmers can be quickly added to a short sleeve top when reaching a summit and stashed away when in warmer temperatures. Swift arm warmers feature a mitt that can cover the hand providing extra protection for the knuckles and back of hand.
These OMM Swift Arm Warmers are ideal for adding a bit of versatile insulation to your minimalist running kit. Stash these in a pocket and if you're going over an exposed fell and the wind is picking up, stick them on and you've added just enough protection to get through comfortably.
