Camp Plus SI Mattress – Large Rectangular
- 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 Large inflatable foam mattress offers warmth, comfort, and insulation for your nights outdoors. At 3 inches thick and with an innovative design, it supports the body while minimizing bulk. Ideal for three-season camping, it ensures comfortable nights on cold ground.
Main features
-
3-inch thickness for increased comfort and support
-
R-value of 4.3 for effective insulation on cool floors
-
Multi-function reversible valve: rapid inflation, rapid deflation and precise adjustment
-
Innovative coring technique to keep contact areas warm while reducing volume
-
Durable and comfortable 75D polyester fabric
-
Large size: 79 x 25 x 3 inches, folds to 8.5 x 13.4 inches
-
Included: carrying bag, repair kit and PillowLock Patch for pillow attachment
Materials
-
Face: 75D Polyester
-
Insulation/Filling: Polyester
Strengths
✔️ Optimal comfort with 3-inch thick foam
✔️ Effective insulation thanks to an R-value of 4.3
✔️ Quick inflation and deflation thanks to the reversible valve
✔️ Innovative design for even support and a small footprint
✔️ Durable fabric for comfortable nights year after year
✔️ Includes practical accessories: bag, repair kit, pillow attachment