These are 16"x12" with 4" of loft. Made of a 4-way stretch material. Weight is 3oz in the stuff sack. They pack up to 2"x4".
VERY comparable to the Sea to Summit Aeros pillows (except these are half the price). 1-way valve for easy inflation. These inflate with 2-3 breaths and deflate with the press of a button. These are not "plastic feeling" at all. Very much a softer fabric and not plastic. I have no problems laying my face directly on the pillow.