UltraLight Self-Inflating Sleeping Mattress - Large
- In stock, ready to ship
- Backordered, shipping soon

The measurements presented are for guidance only.
How to choose the right size
User Height: Measure your full height, barefoot, in an upright position.
Usage: Choose the snuggest possible size to optimize comfort, insulation, and weight.
Sleeping Bag Sizes
| Size | Recommended User Height | Internal Bag Length |
|---|---|---|
| Short | Up to 170 cm | 185 cm |
| Regular | Up to 183 cm | 198 cm |
| Long | Up to 198 cm | 213 cm |
Sleeping Mat Dimensions
| Size | Length | Width |
|---|---|---|
| Short | 168 cm | 55 cm |
| Regular | 183 cm | 55 cm |
| Large | 198 cm | 64 cm |
| Rectangular Regular | 183 cm | 64 cm |
| Rectangular Large | 198 cm | 64 cm |
Sleeping Pads
| Size | Length (cm) | Width (cm) |
|---|---|---|
| Short | 168 | 55 |
| Regular | 183 | 55 |
| Large | 198 | 64 |
| Rectangular Regular | 183 | 64 |
| Rectangular Large | 198 | 64 |
Sleeping Pad Thicknesses
| Range | Thickness (cm) | Comfort | Recommended Use |
|---|---|---|---|
| Ultralight | 5 | Minimal | Ultralight, fastpacking, fast hiking |
| Camp / Lightweight | 5 – 7.5 | Good | Hiking, trekking |
| Ether Light | 10 | Very High | Camping, comfortable trek, side sleepers |
| Comfort Plus | 6.3 (double layer) | High + Safety | Camping, expeditions, air redundancy |
| Comfort Deluxe | 10 | Maximum | Camping, van life, comfort prioritized |
| Self-Inflating | 3.8 – 7.5 | Variable | Camping, versatile use |
All prices are displayed including taxes.
The amount shown is the final price you pay at checkout (shipping fees may apply).
Free shipping on all orders of $200 or more, in Canada and the United States.
Orders ship within 48 hours.
Enjoy 14-day returns after delivery.
Items must be new, unworn, and with original tags attached.
All prices are displayed including taxes.
The amount shown is the final price you pay at checkout (shipping fees may apply).
Free shipping on all orders of $200 or more, in Canada and the United States.
Orders ship within 48 hours.
Enjoy 14-day returns after delivery.
Items must be new, unworn, and with original tags attached.
All prices are displayed including taxes.
The amount shown is the final price you pay at checkout (shipping fees may apply).
Free shipping on all orders of $200 or more, in Canada and the United States.
Orders ship within 48 hours.
Enjoy 14-day returns after delivery.
Items must be new, unworn, and with original tags attached.
Why this price?
- Samples and overstock from major brands
- New products
- Limited quantities – no restock
The Sea to Summit UltraLight - Large self-inflating sleeping pad is designed for hikers and campers looking for an ideal compromise between lightness, comfort and performance. With its innovative design and thermal insulation, it offers excellent sleep quality without weighing down your backpack.
Features :
- Dimensions (Large): 196 x 64 cm, offering a more generous width for increased comfort, whilst remaining lightweight and compact.
- Thickness: 5 cm, ensuring adequate comfort and effective thermal insulation on varied terrains.
- Thermal Insulation: Exkin Platinum® and Thermolite® for optimal thermal insulation. These materials provide body heat reflection to keep you warm without adding weight.
- Air Sprung Cells™ Technology : Independent air cells that provide ergonomic support while remaining lightweight and easy to compress for convenient storage.
- Outer Material: Durable, lightweight 30D Polyester, designed to provide durability without compromising weight.
- Weight: Approximately 560 g (for the Large version), making it one of the lightest mattresses in its category while maintaining great performance.
- Ease of use: Multi-use valve allows quick and efficient inflation and deflation for easy assembly and disassembly.
- Compactability: Easy to store in a small carrying bag to optimize space in your backpack.
Benefits :
- Exceptional lightness and compactness : Perfect for hikers looking to minimize the weight of their equipment without sacrificing comfort.
- Comfort and Support : Air cells and 5cm thickness provide enough support and comfort to get a good night's sleep even on uneven terrain.
- Efficient thermal insulation : Exkin Platinum® and Thermolite® technologies guarantee quality insulation, keeping you warm even on cool nights.
- Durability and Toughness : The 30D polyester outer fabric is designed to withstand wear and tear while being lightweight enough for outdoor activities.
- Ease of use : Quick inflation thanks to a multi-function valve, facilitating installation and storage.