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🎒 Travel light, live large — the pack that’s always ready for your next adventure!
The Sea to Summit Ultra-Sil Nano Day Pack is an ultralight, packable 18L backpack made from durable 15D siliconized nylon. Weighing only 30 grams, it compresses to the size of a chicken egg and supports loads up to 20kg, making it ideal for travel, hiking, and everyday carry. Its vibrant red color enhances visibility, while reinforced construction ensures strength without added weight.






























| ASIN | B07P8RPB58 |
| Age Range Description | Adult |
| Apparel Closure Type | Clasp |
| Backpack Design | Daypack Backpack |
| Best Sellers Rank | #1,245,914 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #674 in Internal Frame Hiking Backpacks #12,500 in Casual Daypack Backpacks |
| Brand Name | Sea to Summit |
| Closure type | Clasp |
| Color | Red |
| Compatible Device Size Maximum | 12 inches |
| Customer Reviews | 4.2 out of 5 stars 33 Reviews |
| Embellishment Feature | Cord |
| Global Trade Identification Number | 09327868092888 |
| Import Designation | Made in USA |
| Inner material | Nylon |
| Item Dimensions D x W x H | 8"D x 11"W x 19"H |
| Item Shape | Rectangular |
| Item Type Name | Backpack |
| Item Weight | 0.04 g |
| Lining Description | Nylon |
| Manufacturer | Sea to Summit |
| Manufacturer Part Number | 318-20 |
| Material Type | Chrome-Plated Stainless Steel |
| Maximum Weight Recommendation | 20 kg |
| Model Name | 318 |
| Number Of Pockets | 2 |
| Number of Compartments | 1 |
| Number of Items | 1 |
| Occasion Type | travel |
| Origin | Made in USA |
| Other Special Features of the Product | Ultralight |
| Outer Material | Nylon |
| Outer material | Nylon |
| Pattern | Solid |
| Pocket Description | Utility Pocket |
| Product Care Instructions | Hand Wash Only |
| Product Style | 318 |
| Recommended Uses For Product | Sport, Work |
| School Type | High School |
| Shell Type | Soft Shell |
| Size | 16 |
| Sport Type | Hiking |
| Storage Volume | 18 liters |
| Strap Type | Double Handle |
| Style Number | A15DPRD |
| Subject Character | Sports |
| Theme | Outdoor Adventure |
| Unit Count | 1 Count |
| Water Resistance Level | Water Resistant |
D**A
Lightweight and durable
Super lightweight but durable. I like the orange because it’s easy to see against the green of the trail.
J**B
Best gear ever
Hands down this is the most versatile piece of gear ever, I love it. My dog and I go for skates in the city. I can bring flip flops, bike lock, bottle of water, and a ball on this bag. Also after you set up a base camp backpacking it’s great as a day pack. Lastly, traveling I would use this cause it’s cheap and light.
G**M
Great Pack
I have 3 of the Sea to Summit Ultralight Day packs: 1. The16 liters that I have attached to the seat of my road bike 2. The 18 liters which I have hooked to my jeans belt loop when I am walking around The NYC 3. The 22 liters that I take in place 18 when I know I will be doing a lot of shopping
N**Y
Zipper failed on first use
I got this pack for my my. Whitney summiting hike. Just as a tiny pack to take up water and a camera. Upon pulling it out after a 70 mile hike I see the zipper can be used and is faulty. Can’t even return it cause i bought it months ago in preparation for this trip. So stupid
L**N
Nice
No problems
J**C
Cumple muy bien su función.
No ocupa espacio y parece muy resistente ademas de bonita. Estoy muy contenta con la compra.
E**R
Prima praktisch
Alles wie erwartet, schon mehrfach gekauft
F**K
Ultraleicht mit schöner Farbgebung, aber teuer
Der Rucksack ist z. Bsp. bei Touren mit dem Rad sehr gut als Reservevolumen geeignet. Verwendet man ihn, spürt man diesen kaum und ich schwitzte auch nicht beim Tragen am Rücken. Als ich eine Regenjacke trug und der Rucksack nur mit wenig Gewicht beladen war, hatte ich mich unterwegs sogar einmal vergewissern müssen, ob ich ihn nicht evtl. hätte stehen gelassen. Ich hatte ihn beim Fahren einfach nicht gespürt. Das kleine Leichtgewichts-Raumwunder ist leider etwas sehr teuer - daher ein Punkt Abzug.
滝**一
サブザックとしてコンパクト&軽量ではこの商品が一番
サブザックとしてコンパクト&軽量ではこの商品が一番。機能は最低限です。ペラペラの材質ですが全く問題なく使えます。 ハーネスがツルンと肩から落ちるのが難点。簡易自作のブレストベルトを付けています。
西**郎
期待外れ
値段と商品が釣り合っていない。コンパクトに畳めてあるが、展開した時の折皺がいつまでも消えない。生地も極薄ですぐに破れてしまいそう。尖ったものは絶対に入れたくない感じ。ショルダーベルトも細く、重たいものを入れたら肩に食い込みそうです。
Trustpilot
3 days ago
1 month ago