Think of it, everything you put things in is generally a rectangle. Putting a rectangle inside a rectangle just makes sense. If you need third party confirmation, just look at a British soldiers "kit". They been conquering the planet for three hundred years, they must have learn something.
Replace Your Nalgene On The Fly Cap With BPA-Free Water Bottle Cap
10 Review
TRIWONDER Collapsible TPU Soft Flasks For Hydration Pack - Ideal For Running, Hiking, Cycling, And Climbing Sports Water Bottles
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32 Oz Wide Mouth Nalgene Sustain Tritan Water Bottle - BPA-Free, Made From 50% Recycled Plastic Waste
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24Oz Miracle 360 Spill-Proof Sippy Cup: Perfect For Toddlers, Big Kids & Adults - Pink!
15 Review
Metal Frame Night Driving Glasses For Men: BIRCEN HD Anti-Glare Night Vision Glasses For Safe Driving
47 Review
Ultimate Fitness Tracker: Xiaomi Mi Smart ποΈ Band 6 - 1.56'' Offers Unmatched Features and Performance
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Segmented Beaded Kids Jump Rope For Exercise And Outdoor Activities - Durable And Shatterproof - Easily Adjustable And Light Weight Skipping Rope For Kids
48 Review
6 Pcs Reflective Bands: High Visibility Running Gear For Women Men - Safety Straps Bracelets For Running, Cycling & Walking
46 Review