Made of metal brackets with thin soft plastic. Not enough to make me return it but enough to say that I wouldn’t order it againThere are some on the market with grooves but I don’t know how that would work with if jars are different sizes and shapes s80102 I will say one side rested perfectly on a cleat, but I did have to bend a tab out on the other end as another reviewer mentioned. There is no spring tension on the rod and it seems to flop about. s80102 I went from a PR deadlift of 515lbs at 178lbs to a max deadlift of 415lbs at 210lbs as the pain increased and my form and workouts suffered. s80102 Besides this one i purchased is so much better anyway. Had to return sneakers. It didnt fit around my belly at all therefore I will have to send it back. s80102 Now, DURABILITY: The earphones are very durables, I used everyday and in every place; they receive scratches, drops, bites by cats and some pulls out. I thought they were made by Logitech, and was unaware that Logitech had purchased Ultimate Ears.
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