Material Nylon, Color Black / Brown /#01 / #02 /#03 / #04, Height 17cm (6.69”), Width 11cm (4.33”), Length 29cm (11.42”), Inner Pocket Main Pocket / Front Pockets / 2 Side Pockets / Back Pocket, Pattern Solid, Weight 390g, Closure Zipper.
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Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($37.18): tRaDetRaCKeR
2. ($37.58): 2203ActiesNL
3. ($37.99): BG00c906
this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGccd078, BG10OFFAFF, BGwhielabel, 13f142, BG10OFFAFF1, BANGGOODSD, 00c906, ADMITAD2212, 2022ACTIESNL, Terence, Tabby20, BG1efeb0, 8Couponsde, MVC8SPRING, 8BGwbg2204
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Do you need price history chart (for all/most countries) for Men Nylon Outdoor Waterproof Tactical Sling Bag? There we go. The lowest price was: $14.79.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).