Deciding between two backpacks and daypacks often comes down to a simple trade-off: do you want a bag that's ready to go, or one that folds away when you don't need it? The Mountainsmith Trippin Pack and the 20L Ultra Hiking-Daypack represent those two approaches, and the choice affects both your budget and the way you pack. One is a fixed-shape travel companion; the other is an ultra-light packable that you can stow anywhere.
Quick Verdict
If you want a defined, colorful pack you can grab from the closet, the Mountainsmith Trippin Pack is the easier choice. If you want an ultra-light, packable pack with a lower price, the 20L Ultra Hiking-Daypack is the way to go. Both are sold as new with tags, so condition won't separate them.
At a Glance
| Feature | Mountainsmith Trippin Pack | 20L Ultra Hiking-Daypack |
|---|---|---|
| Price | USD 29.99 | USD 14.65 |
| Price bar | ||
| Size | 17.5 x 10.25 x 7 inches | Folds to 8.6 x 3.1 x 1.06 inches |
| Color | Multicolor | Black |
| Condition | New with tags | New with tags |
Where Each Product Wins
The two packs are designed for different carrying styles, and that becomes clear when you look at the details.
Where the Mountainsmith Trippin Pack wins
- It's a ready-to-wear backpack with a fixed shape, so there's no folding or setup involved.
- The Mountainsmith name is attached, which may appeal if you like a clear brand label.
Where the 20L Ultra Hiking-Daypack wins
- The price is the lower of the two, which matters if you're watching your budget.
- It's ultra-lightweight and folds into a compact size for storage.
- The water-repellent coating is a practical feature for outdoor use.
Product Notes
Mountainsmith Trippin Pack
The Mountainsmith Trippin Pack is a fixed-shape daypack for people who want to grab a bag and go. Its listed size of 17.5 by 10.25 by 7 inches gives you a concrete idea of how much space it takes up, and the multicolor finish makes it easy to find in a crowded closet. For travel days, it offers a simple, casual look that works whether you're on a train or walking around a city. The reason to choose it is the combination of a defined silhouette and a ready-to-wear design. The limitation is the higher price of the two; if you're flexible about shape and budget, the foldable option may be enough.
20L Ultra Hiking-Daypack
The 20L Ultra Hiking-Daypack takes the opposite approach: it prioritizes portability above all else. Weighing only 2.3 ounces and folding down to 8.6 by 3.1 by 1.06 inches, it's the kind of pack you can stuff into a larger suitcase or keep in a car glovebox. When you unfold it, the size becomes 11.79 by 4.32 by 16.11 inches, which gives it a usable daypack shape. The listing also describes a water-repellent coating, making it a practical choice for hiking, cycling, or unexpected rain. The capacity is clearly listed as 20L, so you know exactly how much you can carry. Choose it if you want an ultra-light pack that barely takes up space when empty. The trade-off is visual: the listed color is black, so you don't get the multicolor styling of the other option.
Final Choice by Use Case
The final pick depends on your priorities. Choose the Mountainsmith Trippin Pack if you want a compact daypack with a defined shape and you're comfortable paying USD 29.99.
Choose the 20L Ultra Hiking-Daypack if you want a portable, packable backup or travel companion; at USD 14.65, it gives you a 20L capacity and a 2.3-ounce weight, with the benefit of folding into a tiny storage size when you're not using it. If a stow-anywhere pack matters more than a fixed shape, this is the one.

