Jar Grips - Set of 3

I use the two flat grippers all the time - they work great for opening jars. I've had them for more than three years now and none of them show any signs of tearing or wearing out yet.As has been noted by some of the reviewers who gave this a lower rating, the two flat ones are thin. I don't see that as a downside in terms of getting a good grip on a jar lid - on the contrary it seems to let them get a better hold because they easily conform to any jar's contours. I'm not sure why it would help for them to be thicker, since the idea is just to create better friction between a smooth and potentially moist jar and a smooth and potentially moist hand. Any thickness of rubbery, textured material should work for that.The green one is large enough for a standard peanut butter or pickle jar, and the blue one is large enough for any oversized jar I've managed to buy in the past 3 years. I suppose there are probably jars in the world for which it would be too small. Perhaps if I were in the habit of buying those giganti-sized jars of three-bean salad at Costco I wouldn't be able to use these to open them. If I ever do encounter a jar lid of that scale I might try one of those place-mat-sized sheets of spongy shelf liner, or maybe a scrap of that non-slip stuff that's sold to put under rugs. But if the jar were that large I suspect my hand would be too small to reach around the lid, so it may be moot that the blue thingy would be too small.Sure, these are bound to wear out eventually. So far mine don't show any tendency to develop rips or holes. I bought these to replace an older one that did wear out even though it was slightly thicker. After several years its material became less flexible and started to develop holes. I think it's just the nature of rubber materials to eventually degrade due to exposure to air and light. My expectation is I'll need to buy a new set of these in a few more years, but at less than $1 per year that's not an unreasonable investment.The red cone shaped thing is much thicker, and has ribs to enhance its gripping powers, but I don't get much use out of that one. I think it's intended to open twisty bottle caps, but I seem to have enough strength to handle most of those bare-handed, so rarely think to use it.