I sewed a men's waxed canvas messenger bag for my husband to carry to work. It has lots of functional pockets and even holes for USB cords! I used Otter Wax
Men's Waxed Canvas Messenger Bag Shoulder Crossbody Military
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Men's Waxed Canvas Messenger Bag Vintage Canvas Crossbody - Temu
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Barbour Essential Waxed-cotton Messenger Bag in Black for Men
Waxed Canvas Messenger Bag (Field Khaki)
Mona B Brown 100% Cotton Canvas Messenger Crossbody Laptop Bag for
Shop Men's Waxed Canvas Messenger Shoulder Bag - LeatherNeo
Waxed Canvas Messenger Bags for men Vintage Shoulder Bag for men – imessengerbags
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Waxed Canvas Messenger Bag (Field Khaki)
NEWHEY Discover our collection of vintage-style mens messenger bags. Made with waterproof genuine leather and waxed canvas, these durable bags are
Genuine Leather Canvas Messenger Bag 15.6 Inch Waterproof Laptop Briefcase for Men, Brown
CANVAS & AWL Waxed Canvas & Genuine Leather Unisex Backpack