Big Agnes Summit Park 15

Field Notes: On the big size, Active Junky’s 6’5” testers were instantly intrigued by the roomy 15-degree bag lovingly nicknamed the “Windsock.” So enormous that a gust of wind could cause the whole thing to get airborne, Summit Park meant warmth well below freezing. And one tester embarked on an impromptu winter backpacking trip with it, sleeping above the snow line.

Pros: The sleeping pad sleeve fit several different pads. While mummy sleeping bags with pad sleeves often make it challenging to turn during the night, Summit is roomy enough to permit internal movement from back to side while employing the pad sleeve. DownTek insulation excelled, as condensation failed to infiltrate the loftiness of this sleeping bag during winter camping while quilted down baffles never yielded cold spots. In extreme conditions, the Summit is a superior outer bag when a smaller mummy is inserted – saving money in the process.

Cons: If you aren’t big and tall, explore some of Big Agnes’ other offerings. Average Joes will be drowning in this wide bag.

Favorite Feature: The sleeping pad sleeve was a top contender for favorite feature, but honors go to the water-resistant DownTek loft as it adds serious versatility and multi-climate performance to the Summit Park 15.

Tester Comment: “On an extended road trip, this rates 10 out of 10. I wouldn’t backpack with Summit Park 15, unless we’re facing extreme cold and don’t have far to travel on foot. Luxurious without being overdone, this bag is ideal for bigger adventurers.”

Bottom Line: While on the big side for backpacking at 4.5lbs, it can be carried. Testers prefer it as a plush car camping bag or as an outer bag for mid-winter excursions