“I baptised the Sea To Summit Reactor Fleece sleeping bag liner on the slopes of Mt Peel in mid-July in my tent. We were below the snow line but we knew it was there! It boosted my Nitrous sleeping bag perfectly and I didn't suffer any discomfort from cold during the nights. I slept wearing a merino base layer and that was it. It's a bit fiddly with zips and the foot draw cord but the additional functionality those features provide outweigh any slight inconvencience. I can tell it will also be awesome as a singler layer in summer in warmer circumstances. It is bit bulky but not excessive and it is light.”
