Sea to Summit Spark Sleeping Bag

Incredibly lightweight and compressible, the Sea to Summit Spark SpI is ideal for ultra-lightweight warm-weather backpacking or thru-hiking. It weighs right around a pound, features weather-resistant treated down insulation, and has a temperature rating of 40 Degrees F. Renowned for their efficiency in retaining heat and compressible properties, the feathers and fibers of down have an incredibly soft, comfortable feel and, despite advances in synthetic materials, continue to provide the best warmth-to-weight ratio of any insulation available. The one inherent weakness of down insulation is that it loses much of its ability to maintain warmth when it gets wet, but the bag’s premium 850+ fill Ultra-Dry Down performs differently. Ensuring consistent thermal performance, a hydrophobic treatment enables the insulation to stay dry longer and dry faster if it should become wet than traditional down insulation. The bag uses lightweight 10 denier nylon on the exterior shell fabric and a 7 denier nylon interior lining. The bag uses sewn-though construction to save weight and keep insulation from migrating and creating cold spots. An insulated hood bolsters warmth. The Sea to Summit Spark SpI sleeping bag is available in your choice of Regular (fits up to 6′ 0′) and Long (fits up to 6′ 4′) size options.

Order Processing: After your payment is authorized and verified, we will start processing your order and this process can take from 1 to 2 business days, so please be patient with us. If we are unable to process your order due to inaccurate or incomplete payment or incorrect address information, your order processing may be delayed.

Carrier: UPS/FedEx/USPS. Delivery Timescale: More than 90% of orders arrive in 10 business days after despatch.

FREE RETURNS on all orders!
The following conditions must be met:

1. Items must be returned within 30 days after the purchase date.
2. Items must be unworn, undamaged and in original packaging.