DRY BAGS: Sea to Summit Ultra-Sil Nano:

Sea to Summit Ultra-Sil Nano:
Sea to Summit Ultra-Sil Nano:

Your choice with dry bags can save you quite a few grams. Without them, you could have some sadly wet gear and maybe a disastrous trip. You need to check the seam sealing on the inside of the bags before each trip to ensure they remain waterproof. If you have any doubt, pour a few litres of water into the bag, and see if any can find its way out. If it can, (other than at the opening) I KNOW Sea to Summit WILL replace them. I always use one of their pack liners and have had to swim rivers with my pack a number of times without getting anything inside wet! They have just brought out a new product line (the NANO) which promises 30% weight savings. I have not tried them yet, but I see that the four I currently use (pack liner, 13L, 8L and 1L) would save my 58.5grams! It all adds up. Neither have I tried zpacks’ but all their other products are excellent, and I might save slightly more with theirs (as well as better fitting them in my http://www.zpacks.com/ pack!) Here are some for comparison:


Zpacks: Pack Liner Dry Bag
44 L: weight: 1.9 oz. / 54 grams price: $39.95Dry Bag

2.2 L: weight: .6 oz. / 17 grams price: $16.95
4 L: weight: .7 oz. / 20 grams price: $19.95
5.6 L: weight: .85 oz. / 24 grams price: $22.959.5 L: weight: .95 oz. / 27 grams price: $25.95
12.3 L: weight: 1.1 oz. / 31 grams price: $28.95Roll Top Blast Food Bag
12.3 L : weight: 1.4 oz. / 40 grams price: $29.95

Sea to Summit: Ultra-Sil® Pack Liners


Size Pack Volume Oval base x Height Weight
Small < 50L (49 x 16) x 79cm 74g
Medium < 70L (51 x 20) x 90cm 98g
Large < 90L (55 x 25) x 122cm 126g

Sea to Summit: UltraSil® Dry Sacks

ø11 x 24cm 1L 20g
ø13 x 29cm 2L 23g
ø15 x 33cm 4L 26g
ø17 x 46cm 8L 30g
ø22 x 53cm 13L 40g
ø25 x 61cm 20L 50g
ø30 x 70cm 35L 65g

Sea to Summit Ultra-Sil Nano Waterproof Dry Sack: Sizing and Specifications

 Volume Oval Base x Height (cms) Weight (gms)
1 Litre (13 x 7.5) x 24 13 g
2 Litre (15 x 9.5) x 28.5 16 g
4 Litre (17 x 11.2) x 33 19 g
8 Litre (20 x 15) x 47 24 g
13 Litre (22.5 x 16.5) x 52 27.5 g
20 Litre (26 x 20) x 63 36 g
35 Litre (31 x 25) x 70 46 g



Size* Color Length x Width Volume Weight
XXS lime 16 x 14 x 7 cm 1 l 12 g
XS orange 21 x 14 cm 3 l 19 g
S yellow 30 x 16 cm 5 l 24 g
M red 35 x 18 cm 8 l 28 g
L blue 42 x 22 cm 13 l 34 g
XL emerald green 46 x 25 cm 22 l 41 g
XXL cyan 52 x 30 cm 40 l 61 g


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