There are some materials that are needed to repair Crocs. However, it all depends on how damaged your Crocs are. For example, if you lost rivets, you will require the following stuff
4-pack Replacement Rivets for Broken Crocs Shoe Strap Fix Button Fastener Repair Parts
The strap broke off when I bumped into a corner, I was hoping someone here could give me an idea on how to fix it :) : r/fixit
Crocs — Design Life-Cycle
Crocs
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Black Shoe Accessories,10-100 Set Replacement Rivets for Broken Shoe Strap Fix Button Fastener Repair Parts,14mm
How to Switch the Straps on a Pair of Crocs™: 4 Steps
How to Clean Crocs with Fur? Simple Solution.
Buy KOTESLLOE 8 Sets Replacement Rivets for Croc, Replacement Parts for Croc, Accessories Help You Repair Instead Replace a New Pair of Croc, Rivets
KOTESLLOE 8 Sets Replacement Rivets for Crocs, Replacement Parts for Crocs
Snappy AdjustableSoft Replacement Heel Straps Brown for Clog Shoes