I?ve investigated this issue and it appears that all you need is a pair of neodymium magnets tapped together and then Velcro?d in the case to fall between the two earcups to get them into ?deep sleep? mode. Over the past few months, Ive spent a lot of money on 3rd party silicone ear tips and foam ear tips (even the new comply AirPods Pro ear tips). This keeps it from falling out, which has been a problem with other ones in the past. The wood color and stain are very nice. I put it in my backpack sometimes, scrambled with all my other rigid belongings. Love this series Read some reviews that the heels were too wide, I havent an experience that. Outside of swimming fins, I never heard of footgear for the pool. Functional and ready to assist with extra space when and where you need it. Liked the shoe, but heel too hard for plantar facsiitis.