Very goodI read a lot of reviews on this which said that you need to buy one size down as it comes up big. The problem is these people never give their height or weight and the size they bought so they aren't really a lot of help! Well I am 6' 3 and 94 kg and XL is just great, especially as I like to wear it over a thin jumper. The quality is very good, it's very warm and looks smart too. Only slight downside I found is that it leaves some fluff on a white shirt but common sense says I probably should have washed it first! I will buy another XL in the green colour.I have several of these gillet light fleeces of various makes. Unfortunately, the quality of the Mountain Warehouse one that I purchased falls below expectations. The fabric is fine, but the zip is weak and began mall-functioning soon after purchase. A few months down the line, it is now broken. Gillets of similar type I have had for years - no problem. But they were of different makes.Fits well, washes well, cosy and warm. Long length keeps more of you toasty. Material good quality. Only reason I didn’t give a 5 is that the zip is stiff at the bottom and hard to undo.Super lightweight, thin micro fleece material, two side pockets, and inside pockets as a bonus. Arrived on time, Would buy again.Nice fitting body warmer I'm 6ft and 13 stone with a 40inch chest medium fits just right over the top of tshirt.im a bit disappointed there is no logo on chest as advertised in sellers picture of garment.