US$ 27.50
osprey daylite pack black Expandable 26+6 Travel Pack, repellent coating 2-4 Years Color:Black 420 Spectron/Mountain 210 Cerylon CL-890 Rain Cover
CL-890 Rain Cover
This transparent and sturdy beach backpack delivers a highly reliable lock system and ranks as one of the best locking beach backpacks on this list
2-4 Years
Color:Black 420 Spectron/Mountain 210 Cerylon
And if only want 1 way messaging then Spot is lighter and cheaper
repellent coating