Hi, I bought a pair from Amazon, not long ago, they where great, however I found them a little too thick so ordered this pair as below , thinner, and a bugga to put on, they stretch a little with 2 fingers before slipping over end of grips, persistence pays off and they slipped over just fine.
No need to trim as fit just great, use a small amount of dish water soap mixed with warm water, then when fitted switch on heated grips to warm for 5 minutes, they will soon stop moving, leave overnight in normal room temperature, for best effect.