My old silicap broke that went thru 100+ of use mileage. The blister issue didn't bother me on the old version silicap (without the hole). When I'm done with the workout, I just put on the sleeve and the blister will go away within 12 hours or less for me. The new one with the hole, I can't keep it on. The suction is weak and keeps slipping. I couldn't do any workouts with it. I contacted sales to get the one without the hole. There should probably be 2 options to choose from on the MOS website for the SiliCap. I personally go with the one without the hole all day as it worked best for me.