Canvas innard and canvas outer. Done on commission.
I decided to build a better catch box (pictures coming soon) and re-assemble the 8mm slingshot. New pouch, new bands. It's quite a delicate assembly. The thin blue bands are faster than thicker ones, but they break easily. If I don't poke silicone grease into the folds regularly, they tear after a few dozen shots. The pouch is 1mm thick leather, which is reinforced with thread where the bands loop into it. If it wasn't reinforced, it too would break quickly. The yellow attachment knots are made with the thinnest Theraband available to be gentle on the bands and weigh the least.
Next to the 4.5mm (BB) slingshot: