Quick Summary
The Ultralight Bivy Sack is a bivy sack for outdoor use. It is presented as an ultralight option and the colour variants mentioned are red and army green. The stated size is 87″ length x 33″ width, so checking that against your expected sleeping space is the key buying step.
It is also described with a breathable build, a thermal reflective coating, a hydrostatic head rating of 5000 and heat reflective material. Those details matter most if you are comparing warmth, moisture control and water resistance for the exact item you want.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Product type | Bivy sack for outdoor use. |
| Variant colours | Red and army green are mentioned as colour variants. |
| Size | 87″ length x 33″ width. Check this against the space you need before choosing. |
| Water resistance | Hydrostatic head rating of 5000. Compare this with the level of water resistance you want. |
| Materials | 70D ripstop polyester with a thermal reflective coating is stated. |
| Heat reflective material | Heat reflective material is included in the design. |
What to Compare Before Buying
- Size: The stated 87″ length x 33″ width is the main fit check for this item.
- Water resistance: The hydrostatic head rating of 5000 is the figure to compare if water protection matters.
- Materials: The stated 70D ripstop polyester and thermal reflective coating are the main build details to compare.
- Colour variant: Red and army green are mentioned, so confirm the version you want.
Using It in Practice
A bivy sack of this type is usually chosen when a small, simple sleeping shelter layer is needed. Before use, make sure the length and width suit your sleeping setup and that the chosen colour variant is the one you expect. If warmth or moisture control matters, compare the stated reflective coating and water resistance against your planned conditions.
Before You Decide
Check the 87″ length x 33″ width against your space needs, confirm the colour variant, and compare the stated hydrostatic head rating of 5000 with the level of water resistance you want. If warmth matters, also review the thermal reflective coating and heat reflective material.






