Anchor Hock glass is fairly thick, but lightweight and feels sturdy. The squared corners makes these jars ideal for lining up in tight spaces. The lids are easy to pull off and push back on, and seal decently tightly. The wide mouths and relatively low height of these jars make it easy to scoop out the contents without difficulty. For US-made glass storage jars, the value is uncontested. However, there is a caveat. The seal rings are made of plastic, and while fairly rigid, I was hoping for silicone. Plastic takes more effort to clean, it absorbs odors, and it stains more readily. In fact, several rings had dark stains on arrival that took some effort to remove, and one was contaminated and had some discolored spots embedded inside it. The seal rings don't seem very durable as I could see some minor fraying around the edges, so I'd expect them to affect the seal's effectiveness over time. I wish the seal ring's material were listed on the item's page for transparency, but considering the excellent value it's a minor complaint.