Kahtoola NANOspikes Footwear Traction Ultralight Low Profile Grip

Excellent

Bought these to run in whilst I was in Poland in January, the ground was icy and very slippy but these served me well and kept me upright even on an icy downhill section.

Excellent quality, check sizing

Excellent grip, However the sizing guide is a bit off, if you're a size 7 UK, choose the Small. The Medium is too big and kept sliding off my boot.