Sea to Summit Trek TkI Down sleeping bag (Long, blue) - Regardless of whether you’re staying in a hostel or sleeping in a tent, the Trek TkI down sleeping bag from Sea to Summit will keep you comfortable! The lightweight and packable sleeping bag boasts a tough outer shell and down insulation for optimal warmth. The down has been treated with a water repellent to shield it from moisture from the outside and condensation on the inside. There are vertical baffles at the chest to prevent cold spots and distribute warmth evenly. For maximum insulation, the Trek TkI features a 3D side-wall baffle, which allows the down to loft to the very edge of the sleeping bag. The hood comes complete with a drawstring so that you can cinch it up and seal out the cold. If it gets too warm, you can adjust the hood so that it lies flat and heat doesn’t accumulate on the interior. The bag also features a 2-way YKK zip for easy entry and connecting it to another sleeping bag. Perfect for couples! Lastly, there’s a zip at the foot box to convert the sleeping bag into a blanket.An lightweight option for both big and small adventures!
Sea to Summit Trek TkI Down sleeping bag (Long, blue) - Regardless of whether you’re staying in a hostel or sleeping in a tent, the Trek TkI down sleeping bag from Sea to Summit will keep you comfortable! The lightweight and packable sleeping bag boasts a tough outer shell and down insulation for optimal warmth. The down has been treated with a water repellent to shield it from moisture from the outside and condensation on the inside. There are vertical baffles at the chest to prevent cold spots and distribute warmth evenly. For maximum insulation, the Trek TkI features a 3D side-wall baffle, which allows the down to loft to the very edge of the sleeping bag. The hood comes complete with a drawstring so that you can cinch it up and seal out the cold. If it gets too warm, you can adjust the hood so that it lies flat and heat doesn’t accumulate on the interior. The bag also features a 2-way YKK zip for easy entry and connecting it to another sleeping bag. Perfect for couples! Lastly, there’s a zip at the foot box to convert the sleeping bag into a blanket.An lightweight option for both big and small adventures!
in 2 offers
The lowest price for Sea to Summit Trek Down Sleeping Bag TKI Long right now is $424.11 at Frontier - Adventure At Its Core, compared across 2 retailers.
The all-time low was $285.97 on 30 July 2025 — today's price is 48% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 28 June 2026.
Sea to Summit Trek Down Sleeping Bag TKI Long
Sea to Summit Trek TkI Down sleeping bag (Long, blue) - Regardless of whether you’re staying in a hostel or sleeping in a tent, the Trek TkI down sleeping bag from Sea to Summit will keep you comfortable! The lightweight and packable sleeping bag boasts a tough outer shell and down insulation for optimal warmth. The down has been treated with a water repellent to shield it from moisture from the outside and condensation on the inside. There are vertical baffles at the chest to prevent cold spots and distribute warmth evenly. For maximum insulation, the Trek TkI features a 3D side-wall baffle, which allows the down to loft to the very edge of the sleeping bag. The hood comes complete with a drawstring so that you can cinch it up and seal out the cold. If it gets too warm, you can adjust the hood so that it lies flat and heat doesn’t accumulate on the interior. The bag also features a 2-way YKK zip for easy entry and connecting it to another sleeping bag. Perfect for couples! Lastly, there’s a zip at the foot box to convert the sleeping bag into a blanket.An lightweight option for both big and small adventures!
Sea to Summit Trek TkI Down sleeping bag (Long, blue) - Regardless of whether you’re staying in a hostel or sleeping in a tent, the Trek TkI down sleeping bag from Sea to Summit will keep you comfortable! The lightweight and packable sleeping bag boasts a tough outer shell and down insulation for optimal warmth. The down has been treated with a water repellent to shield it from moisture from the outside and condensation on the inside. There are vertical baffles at the chest to prevent cold spots and distribute warmth evenly. For maximum insulation, the Trek TkI features a 3D side-wall baffle, which allows the down to loft to the very edge of the sleeping bag. The hood comes complete with a drawstring so that you can cinch it up and seal out the cold. If it gets too warm, you can adjust the hood so that it lies flat and heat doesn’t accumulate on the interior. The bag also features a 2-way YKK zip for easy entry and connecting it to another sleeping bag. Perfect for couples! Lastly, there’s a zip at the foot box to convert the sleeping bag into a blanket.An lightweight option for both big and small adventures!
Last updated at 28/06/2026 09:41:51
Trek TKI, Long
Free delivery
Sea to Summit Trek TKI Down Sleeping Bag -1°C LONG / Blue | Boss Outdoor
| Snowys Comfort Rating | 5 °C |
| Lower Limit | −1 °C |
| Shape | Tapered Rectangular |
| Fill Ratio Top/Bottom | 60/40 |
| Max. User Height | 183 cm |
Trek TKI, Long
Free delivery
Sea to Summit Trek TKI Down Sleeping Bag -1°C LONG / Blue | Boss Outdoor
| Snowys Comfort Rating | 5 °C |
| Lower Limit | −1 °C |
| Shape | Tapered Rectangular |
| Fill Ratio Top/Bottom | 60/40 |
| Max. User Height | 183 cm |
