Soooo I’ve just tried out a coat and sling together for the first time (only used slings before) awesome stuff, unbelievably stable

, however my fingers said many bad words to me

, completely numb after 12 rounds, I was using a thick welding glove as I don’t have a real one, so my question is what to look for in a glove? I’m using a GI cotton sling, but may change to leather, I wasn’t using a hand stop, merely letting the sling trap my hand, possible cause?