lululemonFast and Free Run Belt (Black, Size S/M)

This thing is made of stretchy, durable material. It has nice little extra key-pockets on either side of the main pocket, which have nice little clips in them, to secure the keys, and the right side one even has a little tether which (for me) is long enough to unlock my front door without unclipping the keys. Just make sure to tell your family that when you unlock the door, not to suddenly pull it open from the other side - because you're attached! Even then, the tether survived the yank with no apparent damage. Yes, it's a little spendy (as all the lululemon stuff is) but it is actually worth it, IMO. I recommend.