# ... — 经过验证的规格比较

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What is the lightest weight waterproof travel bag for easy portability?

## 产品列表

### Sea to Summit Ultra-Sil Dry Bag
```yaml
product: sea-to-summit-ultra-sil-dry-bag
brand: Sea to Summit
price_gbp: 16.95
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
weight: 3L: 0.03; 5L: 0.032; 8L: 0.039; 13L: 0.047; 20L: 0.058; 35L: 0.074
capacity: 3, 5, 8, 13, 20, 35
material: 30D CORDURA nylon
dimensions: 3L: 20.7 x 17.1 x 14; 5L: 30.8 x 17.1 x 15; 8L: 36.8 x 19.1 x 17.2; 13L: 43.3 x 22 x 19.6; 20L: 47.3 x 26.9 x 23.6; 35L: 56.5 x 32.1 x 28.5
external_pocket: false
waterproof_rating: 2000+ mm hydrostatic head
```

- **价格:** £16.95 [^1]
- **概述:** The Sea to Summit Ultra-Sil Dry Bag is an ultralight dry bag made from 30D CORDURA nylon with taped seams, a roll-top closure and a translucent body. It is suited to backpackers and travelers who need compact, organized storage inside a pack or duffle rather than a rugged bag for prolonged submersion.
- **最适合:** 3L 版本重量仅为 0.03 kg，尺寸紧凑，为 20.7 x 17.1 x 14 cm，防水性能达到 2000+ mm hydrostatic head，是轻量、便携旅行收纳的理想选择。
- **附加来源:** [^2], [^3]

---
## 参考来源
[^1]: Sea to Summit, 访问日期 2026-09-13. https://seatosummit.com/products/ultra-sil-dry-bag
[^2]: REI, 访问日期 2026-09-13. https://www.rei.com/product/218732/sea-to-summit-ultra-sil-dry-bag
[^3]: Quest Outdoors, 访问日期 2026-09-13. https://www.questoutdoors.com/products/sea-to-summit-ultra-sil-dry-bag