This week’s fabric is one that is great for summer casual wear...and was often used for this in the 1970s and 80s.

Terry knit  
A plain stitch knit fabric with a set of yarns pulled out on the technical back to form loops, as in woven terry cloth. Unlike woven terry, the loops are only on one side, and the fabric stretches. 
Terry knit is usually made of cotton and cotton blends, also manufactured fibers. It probably was originally made of silk. 
Uses: Sportswear, loungewear, sleepwear, children’s clothing 
See also:
Terry cloth
Velour knit
Terry knit
©Vintage Fashion Guild - Text by Margaret Wilds/denisebrain,  photo by Hoyt Carter 
A vintage classic for this fabric: 1970s unused terry knit romper currently in my Etsy store