Ultralight and super-compact with 850+ ULTRA-DRY Down
The Spark 28F is an ultralight down sleeping bag that packs down super-small for fast-and-light trips. The Sea to Summit Spark sleeping bag uses premium materials, including ULTRA-DRY Down 850+ Loft Loft, and no-frills design to provide cutting-edge performance for backpacking, bikepacking, and travel. Ultralight does not mean ultra-tight: The Spark sleeping bags are snug but still have adequate girth for the performance-oriented backcountry user.
• 10D shell and 7D liner materials help to achieve the incredible lightweight and compact packed size
• Sewn-through construction in lower part of bag minimizes weight
• Vertical box baffles in torso area accommodate extra down and boost core warmth; vertical baffles in chest optimize position of down and prevent it moving during use
• Draft tube prevents heat loss through the zipper
• Includes hood draft collar
• 1/2 zip with two sliders keeps weight to a minimum while allowing ventilation
• Updated sizing provides extra room for both shoulders and hips while maintaining insulation efficiency
• Includes lightweight Ultra-Sil™ compression bag and storage cell



























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