Trekology Inflating Travel Pillows

This weighs 3.6oz, not the advertised 2.12 (item weight listed), 2.75 (in ad) or 3.3 oz (further down in ad). I have the Aluft 2.0 (same pillow with extra features) and it weighs 3.9oz (as advertised) on the same scale so I know my scale is correct. I bought these for my kids to save them pack weight (thru hiking next year) but for the 0.3 oz more they're better off with the Aluft 2.0 because at least it will secure to their sleeping pad with the straps so I'm returning these. Other than the incorrect weight (which is SUPER important to long-distance hikers!) it's a very comfortable pillow. I can only give this three stars for the incorrect info. If it was corrected, I'd change my rating to five stars.