The chest pack has worked out really well! I was very pleased with its performance in the field and I’m very glad that I bought one. The design keeps the sweat off my back far better than a cruiser vest and the fabric it’s made of is tough enough to handle being a part of a geologists toolkit. The adjustability if fantastic, and the ability to have modular add-ons is a huge plus. Thanks for making such a quality product, keep up the great work!