To extend the modular notion still further, the three small pouches, for lenses or cell-phones, can also be coupled to the sides of the bigger pouches, making very compact combo’s ... The Bass, Cello, Diva, Viola and Violin each have their own accessory side pouches, which are appropriately scaled to provide lateral volume. Each is lined in linen, has a pleated pocket, is padded with high density foam, and has its own detachable shoulder-strap, making it a fully autonomous shoulder bag. ( For dimensions, refer to ‘Technical Specifications’ under individual hold-alls) Scaled for cameras and camcorders, but equally 'generalist' in that they can be coupled to the bags, these pouches have small pleated pockets under their flaps, detachable shoulder straps, and a velcro clasp which enables you to couple them to anything reasonably co-operative, including your waist-belt. Lined in linen, padded and very robust for rangefinder lenses, cell phones, loupes...   a small, collapsible, simple, and simply useful little pouch... for smaller things ... and everything else ...     a simple folding wallet-pouch, for four filters... like a portable cache of Provencal herbs...