The FLEX series from Porter-Yoshida & Co. offers a range of large-capacity bags built from lightweight yet highly durable materials, allowing them to be folded and stowed compactly. Each bag features a dual-layer design for strength, made from a nylon ripstop fabric that is acrylic-coated for a premium finish. Used for military applications such as parachutes and ponchos, this style of ripstop is renowned for its hardwearing properties and resistance to tearing, even when punctured.

The FLEX bonsac is a large, multipurpose bag that can be used as a duffle-style carry bag or a lightweight backpack — ideal for overnight stays, trips to the gym, or additional foldaway storage while travelling. Key features include a 40-litre main compartment with dual-entry zippers, an internal zippered pocket, a sturdy grab handle, adjustable shoulder straps, and a clip-top closure that can double as a shoulder strap.