The Kelty Rambler 50 is a semi-rectangular synthetic sleeping bag built for warm-weather use, with a manufacturer limit rating of 10°C (50°F) that places it firmly in the 2-season spring/summer category. Insulation comes from 320 g of CloudLoft synthetic fill inside a 260T polyester pongee shell and liner with no additional water-resistant treatment — synthetic fill handles damp conditions better than down, though it trades away some warmth-to-weight efficiency.
At 950 g total weight and a warmth-to-weight ratio of 10.5, the Rambler 50 sits closer to general camping gear than ultralight thru-hiking kit; it suits summer car camping, warm-weather backpacking, or as a budget-friendly second bag for shoulder-season trips. The semi-rectangular cut unzips flat so it doubles as a blanket around camp, and a compression stuff sack is included to keep packed volume manageable. It's built as a unisex bag, rated for users up to 183 cm tall.
Specifications
Color
Green
Limit Temperature
10 °C
Temperature Rating Standard
Manufacturer rated
Season Rating
2-season (spring/summer)
Total Weight
950 g (2.09 lb)
Fill Weight
320 g (11.3 oz)
Internal Length
185 cm (6.1 ft)
Shoulder Width
74 cm (2.4 ft)
Packed Size ( Length x Diameter )
28 x 18 (11.0 x 7.1 in)
Insulation Type
Synthetic
Synthetic Insulation Name
CloudLoft
Shape
Semi-rectangular
Zipper Side
Right
Zipper Length
Full length
Shell Fabric
260T Polyester Pongee
Liner Fabric
260T Polyester Pongee
Water Resistance
None
Stuff Sack Included
✓
Size Category
Regular
Maximum User Height
183 cm (6.0 ft)
Gender-Specific Fit
Unisex
Warmth-to-Weight Ratio f(x)
10.5 °C/kg
Fill Efficiency f(x)
3.13 °C/100g
Weight per Degree f(x)
95 g/°C
Bag Type
Semi-rectangular sleeping bag
Where to buy
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Category context Sleeping Bags (417 products)
Weight
Standard weight· mainstream zone 819–1420 g· ranked 152 of 418