Last updated at 23/04/2026 22:03:10
Sea to Summit Treeline TL1 -3°C Down Sleeping Bag - Long 2019 LHZ - Long L/H Zip
Free delivery
| Comfort Rating | 2 °C |
| Snowys Comfort Rating | 2 °C |
| Lower Limit | −3 °C |
| Shape | Relaxed Mummy |
| Max. User Height | 183 cm |
Sea to Summit Treeline TL1 -3°C Down Sleeping Bag - Long 2019 LHZ - Long L/H Zip
Free delivery
| Comfort Rating | 2 °C |
| Snowys Comfort Rating | 2 °C |
| Lower Limit | −3 °C |
| Shape | Relaxed Mummy |
| Max. User Height | 183 cm |
Sea to Summit's Treeline Sleeping Bag is a budget down bag that is ideal for three season use when you’re confident the temperature won’t drop below freezing. This design has a little extra room around the shoulders and hips for freedom of movement, the relaxed mummy shape still provides efficient warmth and heat retention when you need it. Filled with 400g of compressible and lofty 600+ down, the Treeline will keep you warm and comfortable. The two-way YKK #5 side zip with anti-snag fabric provides easy access and ventilation for warmer weather. Utilising the unique internal cord tunnel in the hood and neck draft tube, the Treeline ’s exterior finish is kept neat and free of additional loose fabric. The internal chest pocket is a great spot for keeping valuables secure, or batteries warm. The 50D Nylon shell and lining fabrics provide long-term durability while still offering good compressibility. Light enough for backpacking adventures, this sleeping bag can withstand the rigours of sharing your outdoor adventures with kids or dogs.
Sea to Summit's Treeline Sleeping Bag is a budget down bag that is ideal for three season use when you’re confident the temperature won’t drop below freezing. This design has a little extra room around the shoulders and hips for freedom of movement, the relaxed mummy shape still provides efficient warmth and heat retention when you need it. Filled with 400g of compressible and lofty 600+ down, the Treeline will keep you warm and comfortable. The two-way YKK #5 side zip with anti-snag fabric provides easy access and ventilation for warmer weather. Utilising the unique internal cord tunnel in the hood and neck draft tube, the Treeline ’s exterior finish is kept neat and free of additional loose fabric. The internal chest pocket is a great spot for keeping valuables secure, or batteries warm. The 50D Nylon shell and lining fabrics provide long-term durability while still offering good compressibility. Light enough for backpacking adventures, this sleeping bag can withstand the rigours of sharing your outdoor adventures with kids or dogs.
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The lowest price for Sea to Summit Treeline Down Sleeping Bag TLI Long right now is $249.00 at Seven Horizons.
The all-time low was $249.00 on 26 July 2025. That's the lowest price we've ever tracked — a great time to buy.
Prices last updated 23 Apr 2026.
Sea to Summit Treeline Down Sleeping Bag TLI Long
Sea to Summit's Treeline Sleeping Bag is a budget down bag that is ideal for three season use when you’re confident the temperature won’t drop below freezing. This design has a little extra room around the shoulders and hips for freedom of movement, the relaxed mummy shape still provides efficient warmth and heat retention when you need it. Filled with 400g of compressible and lofty 600+ down, the Treeline will keep you warm and comfortable. The two-way YKK #5 side zip with anti-snag fabric provides easy access and ventilation for warmer weather. Utilising the unique internal cord tunnel in the hood and neck draft tube, the Treeline ’s exterior finish is kept neat and free of additional loose fabric. The internal chest pocket is a great spot for keeping valuables secure, or batteries warm. The 50D Nylon shell and lining fabrics provide long-term durability while still offering good compressibility. Light enough for backpacking adventures, this sleeping bag can withstand the rigours of sharing your outdoor adventures with kids or dogs.
Sea to Summit's Treeline Sleeping Bag is a budget down bag that is ideal for three season use when you’re confident the temperature won’t drop below freezing. This design has a little extra room around the shoulders and hips for freedom of movement, the relaxed mummy shape still provides efficient warmth and heat retention when you need it. Filled with 400g of compressible and lofty 600+ down, the Treeline will keep you warm and comfortable. The two-way YKK #5 side zip with anti-snag fabric provides easy access and ventilation for warmer weather. Utilising the unique internal cord tunnel in the hood and neck draft tube, the Treeline ’s exterior finish is kept neat and free of additional loose fabric. The internal chest pocket is a great spot for keeping valuables secure, or batteries warm. The 50D Nylon shell and lining fabrics provide long-term durability while still offering good compressibility. Light enough for backpacking adventures, this sleeping bag can withstand the rigours of sharing your outdoor adventures with kids or dogs.
