Is it possible to waterproof the seams of this bag? I noticed on my last trip with this bag that the seams were where a lot of the heat loss was occurring... is there a product I could buy to do this?

Tech Specs:

Material:

[shell] nylon (20D), silicon coating, DWR coating; [lining] nylon, water-resistant coating 

Insulation:

800-fill down 

Shape:

mummy 

Draft Collar:

no, draft tube 

Max User Height:

(regular) 6 ft, (long) 6 ft 6 in 

Shoulder Circumference:

(regular) 63 in, (long) 65 in 

Hip Circumference:

(regular) 57 in, (long) 59 in 

Foot Circumference:

(regular) 43 in, (long) 45 in 

Stuff Size:

7 x 7 in 

Stuff Sack:

yes 

Storage Sack:

yes 

Degree:

30 F 

European Norm Comfort Rating:

40 F 

European Norm Lower Limit Rating:

30.7 F 

Weight:

(regular) 1 lb 11 oz, (long) 1 lb 15 oz 

Recommended Use:

three-season backpacking, lightweight trekking, travel 

Manufacturer Warranty:

lifetime