I'm pretty satisfied with the quality of the product under its price: 3,69 euros only, including delivery. The product is quickly arrived in my letter box, about ten days while it often takes 20 to 30 days where the vendor is Chinese, as is the case here. The capacity (24cl or 8oz) is important enough to fill a large highball glass. Regarding materials, flange itself is steel (stainless theory, I can not check) while the cap and its connection are plastic metallic color, this is the only downside. In itself this is not disturbing, but it can make a tad cheap and if you're a big nag, go your way. I did not have to complain, the plug and never gave very firm, no leakage to see, even by shaking the flask. Steel looks solid, pressing well above any deformation, the product does not knock either in look or to touch (except for the cap). In terms of packaging, the flange is stored in a black box (with the inscription Stainless Steel Hip Flask) itself covered with a protective plastic film. In this box is an accessory: a small plastic funnel for pouring the liquid in the flask easily. Given the price, it would be stupid to deny it.