Sierra Designs has developed the SYNTHESIS 35 DEG REG to keep you warm and comfortable on cooler nights. Designed with synthetic insulation and light materials, it offers many features.
Its double zipper system makes it easy to get in and out and gives you room to move, while the self-sealing foot closure lets you shed heat easily.
The 20D nylon fabric andsynthetic insulation provides great warmth even when wet, and the windproof collar keeps out drafts and can be closed quickly when the cold starts to set in.
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