Thermarest Zonker Self-Inflating Mattress


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A Contemporary Take on Therm-a-Rest Classic.

This is the self-inflating bad boy that started it all. Riffing on the classic Therm-a-Rest® mattress of yore, this is the workhorse of contemporary car camping comfort. It’s built to last with time-tested materials and construction, and makes a fine addition to truck beds and basecamps everywhere.

Technical Details
  • Light, soft fabrics are especially comfortable.
  • 1.75-inch thickness delivers great warmth and support.
  • Self-inflating foam core expands when unpacked.
  • Durable, classic design.
  • R-Value 4.4
    Weight (Standard) 2 lbs 9 oz
    Weight (Metric) 1.16 kg
    Width (Standard) 25 in
    Width (Metric) 63 cm
    Length (Standard) 77 in
    Length (Metric) 196 cm
    Thickness (Standard) 1.75 in
    Thickness (Metric) 4.4 cm
    Packed dimension (Metric) 15 cm x 66 cm
    Packed dimension (Standard) 6 in x 26 in
    Top fabric type 75D polyester
    Bottom fabric type 75D polyester
    Core Die-Cut PU Foam
    Country of Origin USA*Built of the Finest U.S. and Global Materials
    Volume (Standard) 3370 cu. in