CarryField Guide

40L Waterproof Hiking Backpack vs 15L Packable Daypack: Which Should You Carry?

Choose between a 40L waterproof hiking backpack and a 15L packable daypack. Compare listed prices, capacity, and carry roles to find your fit.

Last updated Aug 9, 2026

Quick Verdict

Your decision comes down to how much gear you carry and whether you need a main bag or a spare. The Unisex 40L Waterproof Hiking Backpack is built for larger loads and wet-weather protection at USD 35.80. The Small Hiking Backpack 15L is a feather-light, packable daypack at USD 37.46. If you are packing for multi-hour hikes or travel, the 40L gives you room; if you need a bag that disappears into luggage, the 15L wins.

At a Glance

FeatureUnisex 40L Waterproof Hiking BackpackSmall Hiking Backpack 15L
Listed priceUSD 35.80USD 37.46
Volume40 L15 L
ClosureZipZipper
ColorBlueBeige
Weather/durabilityWater-resistant nylon fabricTear-resistant, scratch-proof fabric
Carry styleUnisex adult backpackAdult daypack with shoulder harness

Where Each Bag Wins

Unisex 40L Waterproof Hiking Backpack

Choose it when you need one bag that can handle long outings, commuting, and travel with extra layers, snacks, or gear. The large volume and water-resistant nylon fabric make it the stronger all-purpose main backpack, especially if the forecast is uncertain or you are carrying equipment that needs to stay dry. Its blue color and unisex adult sizing broaden its appeal within the household.

Small Hiking Backpack 15L

Choose it when you want a daypack that feels like it is barely there. It folds into a compact pouch, zips shut, and carries via shoulder harness, making it a natural pick for city exploring, light trail hikes, or as a backup bag inside a larger case. The beige color and adult unisex sizing mean it works for a range of travelers. The trade-off is a smaller 15-liter capacity, so keep the packing list tight.

Product Notes

Unisex 40L Waterproof Hiking Backpack

At 40 liters, this bag is the roomier of the two and gives you one carry-all for trail days, work commutes, and short trips. The zip closure and hand-wash care instructions fit an outdoor travel routine, and the blue unisex adult design keeps it versatile. Its water-resistant nylon fabric is the reason to trust it in damp weather. The limitation is its footprint: the 40L bag is a main backpack, not a throw-in-the-suitcase spare, so you will want to keep it on your back rather than pack it away.

Small Hiking Backpack 15L

This packable daypack is all about saving space and weight. It folds into a compact pouch, zips closed, and is designed for adult daypack carry with a shoulder harness. At 0.62 pounds, it is easy to bring along just in case, making it a great companion for city days, light hikes, or trips where you don't want a second full-size backpack. The beige color keeps a clean look. The limitation is volume: 15 liters will hold only the essentials, so choose this when minimal is intentional rather than accidental.

Final Choice by Use Case

If your travels include longer trails, rainy days, or gear-heavy commutes, the Unisex 40L Waterproof Hiking Backpack is the practical pick. If you value a lightweight daypack that can disappear into luggage and cover light adventures, the Small Hiking Backpack 15L is the flexible choice. Both options are new with tags and use zipper closures, so the real question is how much space and weather protection you need versus how little weight you want to carry.

Products in this article
Unisex 40L Waterproof Hiking BackpackUSD 35.80View on eBaySmall Hiking Backpack 15L- Lightweight Packable Foldable BackpackUSD 37.46View on eBay
Unisex 40L Waterproof Hiking BackpackUSD 35.80View on eBaySmall Hiking Backpack 15L- Lightweight Packable Foldable BackpackUSD 37.46View on eBay