I have a 30L Osprey day pack that I really rate, except for one fact... it's super fucking noisy in the bush. Especially the shitty manuka scrub I seem to be ending up in a lot lately.
Thanks to my very lovely wife (thanks babe) and a couple old fleece tops I now have a noise cancelling cover. The middle retention strap is elastic band and a snap to allow easy fitting and a bit of stretching when loaded up. Used the sleeves with elastic at both ends for the hip belt pockets.
Sorry the pictures are pretty crap.
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