I bought this at Marui about 10 years ago, and it's been sitting unused ever since. The material is unknown, and it's a no-brand item. I think it's lightweight and easy to use. I'll offer a discount for combined purchases, so please take a look at my other accessories as well. Length: Approximately 48 cm, with a 5 cm adjuster. Please note that these measurements are approximate. Since I haven't done any maintenance, please refrain from purchasing if you are concerned about aging or deterioration. There is no box. I will wrap it in bubble wrap and ship it via Nekopos.