I was breaking the tabs off of the button I remixed from DanLabsInc while trying to install it. This one is 0.5mm smaller diameter, it has small reinforcements on the tabs, and i included a "spring pocket" so the spring stays centered inside the button. I used this on my Igloo Playmate "The Boss" cooler. It should work on all igloos with this type of opening button. I printed it with ABS and walls at 30 lines for a solid, strong part. Enable "ironing" if youd like a nice, smooth top. Print with supports, and the top of the button pointing up.