If it helps anyone I’ve had sleeves from absilicone, autoextender and LG hanger.
absilicone sleeves are about 0.8” internal diameter but are pretty soft and stretchy, haven’t had any tear yet, they do develop nicks in the ends and you just to trim them. Decent product, poor customer service.
Autoextender sleeves are about the same size, the blue sleeve is harder than the absilicone and probably too hard for a pump sleeve, works great at a clamp wrap.
Monkeybar does a yellow sleeve which is really soft and would work for pumping, the wall thickness is a couple of mm greater than the absilicone though.
Great products and customer service.
LG makes three sizes 0.8 and 1.0 and 1.1” all the same wall thickness and stiffness.
I’d say they are about the same stiffness as autoextenders blue sleeves but not as soft as the absilicone.
Great product and service but very expensive if you’re outside the US.