The ULTRA-DRY Down™ protection also makes the Spark™ an impressive hard-alpine or adventure racing bag, where every gram is counted and down has never been a viable option.
|Recommended User Height||up to 183 CM||up to 198 CM|
|Packed dimensions||ø9.5 x 13 CM||ø9.5 x 18 CM|
|Compressed Volume (ASTM F1853-11)||0.9 L||1.3 L|
|Weight||225 G||260 G|
|Fill Weight||100 G||115 G|
|Internal Chest Circumference||150 CM||158 CM|
|Internal Hip Circumference||130 CM||138 CM|
|Internal Foot Circumference||88 CM||94 CM|
850+ Fill Power indicates that 1 oz of down will re-expand to over 850 cubic inches after compression. Higher loft means that less down can be used to achieve the same temperature rating – important for performance sleeping bags. The loft and down quality/composition are independently tested by the International Down and Feather Laboratory (IDFL) – a copy of the certification is supplied with every Sea to Summit sleeping bag.
ULTRA-DRY Down™ is a permanent nano-level water repellent polymer treatment applied to our down which protects it from external moisture and condensation from inside the bag virtually eliminating the negative effects moisture has on down.
An excellent down sleeping bag ideal for MdS if you are a 'warm' sleeper and a myRaceKit recommendation!