We ride in a cold environment, 59° is a warm day for us. We didn´t realize at first how cold the handlebar gets but our guy had cold hands on our first rides (in middle of summer) - After purchasing Mini-grips he feels like he´s controlling the bike, which can be a problem when he want´s to go the other direction :) But - the best thing is - his hands are always warm now :) :) :)
A must have, in my opinion