Sea To Summit Trailhead ThIII

3 Years Warranty


  • It’s tapered rectangular shape provides more space and comfort than a traditional mummy bag while the full-length side and foot zip allows the bag to be opened out and used as a quilt.
  • A second zip slider in the footbox provides extra ventilation and versatile temperature adjustment.
  • Tapered rectangular shape for more space and comfort than a traditional mummy bag
  • Second zip slider in footbox for versatile ventilation
  • Includes stuff sack

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Trailhead ThIII

A refined take on the classic synthetic trail bag, our Trailhead™ is packed full of technical features in a no fuss, uncomplicated design.



Regular Wide


Recommended User Height
Packed dimensionsø21 x 40 CMø24 x 45cm CMø24 x 45 CM
Compression sack volume (compressed)15 L20 L20 L
Weight1370 G1550 G1530 G
Internal Chest Circumference152 CM172 CM162 CM
Internal Hip Circumference146 CM161 CM157 CM
Internal Foot Circumference102 CM122 CM108 CM

Our unique WaveLoft™ construction uses thick layers of synthetic insulation looped together to gain extra loft and trap pockets of warm air, providing increased warmth in colder conditions.

The baffle construction also eliminates the frustration of getting tangled in loose lining as all lining fabrics are attached to the shell fabric.


Additional information

Weight3 kg
Dimensions33 × 33 × 18 cm





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