The military-grade laces encase the outsole module, threading through the dual-layered upper and securing in the inner eyelets. The laces pass through a groove at the heel of the outsole module to prevent the heel from slipping. The toe area features a split-toe design, allowing the upper to be inserted and fixed in place. This split-toe design helps prevent the foot from twisting inside the shoe during river tracing. To replace the outsole module, simply loosen the laces and pull the outsole forward. An additional set of laces is provided on the upper, allowing for tension adjustment through hardware at the heel. A zipper is included for easy on and off during regular use.