I'm visiting my brother in Naples, Florida right now and my SIL and I stopped at Costco yesterday for a quick visit. On the way out, I saw a display of Lolë belt bags, which looked intriguing (because it's a bag, ya know!). I decided to buy one since it was only $12.99. The next morning I headed out to the beach for a walk with it, and loved it! It's small but sturdy, large enough for phone, sunglasses, keys and a large lip balm with room to spare, and fits snugly across the body so no bouncing while you're walking.
I liked it so much, I kept using it instead of the purse I brought. I wore mine on my hip but it can also be worn across the chest or back. Really a nice product and a great price! You can find it online but for a higher price ($16.99). It comes in black and tan. https://www.costco.com/lole-unisex-belt-bag.product.4000035885.html