Firstly I’m not a runner, I bought the ultralite jacket in neon watermelon for a hiking holiday in the Lake District and it didn’t disappoint. I don’t normally do bright colours but love this one and it made it impossible for my hubby to lose me in the hills! I usually buy a size 8 in jackets and got this in XS and it fits perfectly. At only 4”11 this jacket is a good length for me and you can also tuck it up with the drawstring at the bottom. The hood is a good fit and the jacket withstood a very rainy four hour walk with no problems. I also have the origin Mac which is a more relaxed fit, this one is a neater fit for me. I would definitely recommend this jacket.