sizing is UK ,therefore if one normally wears a US Medium, one should upsize to a UK Large for general use.As a belay jacket,one may opt to upsize by 2. The arms are generously log as appropriate for a climbing/mountaineering parka where one regularly reaches overhead. the fit is well considered with the back extending well over the buttocks.The Rab Neutrino Endurance provides an extra measure
This review was written in the old system and had content requirements that are different than reviews written today.