I love packs like these. Several companies make them. Precision Pak calls the model they sent me a bait holder. It’s basically a small pack that can be used with the included shoulder strap or as I used without. The pack has 2 belt slots on the back which is perfect for putting it on the strap of a kayak seat. I put leader spools, wire, and such in mine. The pack is lightweight and works well with the Velcro closure. You can’t go wrong with this item.  The company makes other packs with built in plug holders, etc. Put a different one on each side of your kayak and you’ll wonder how you lived without them.