I read some reviews stating that these swabs were not thick enough or brittle, but I find them to be quite the opposite. This case did indeed keep my phone dry when we were hiking in the rainforest in Costa Rica and clamoring in and out of the boat we needed to get there, as well as walking in sloshing knee-deep surf. The store didnt carry them. Used this ski rack twice on 2 1300 mile trips. La calidad de sonido es alucinante, así como su comodidad. they are still going and I wear them every day at home. Even with these redeeming qualities, I dont think this kit is worth more than $20, and the wood bits wouldnt have added much value, if any, had they been drilled properly. Mostly I didn?t learn anything new, but it was interesting. Mids and highs are fantastic even in 2019. What also helps is soaking your feet in ice cold cold cold water after a long day.