The small pocket concealed behind the front zipper carries a rust-proof folding knife with a plain blade. It has a large hole in the blade so I can open the knife with one hand. The PFD has buckles and the belt holding it in place, so it’s safe to open the zipper to get to the...
High density Polyethylene (HDPE): is a highly crystalline non-polar thermoplastic resin produced through the copolymerization of ethylene and a small amount of α-olefin monomer. HDPE is synthesized under low pressure and is therefore also called low-pressure p...