This is a pair of vintage REI Co-Op nylon slippers filled with 60/40 Duck Down! The exterior is all blue nylon. These are men's size small - the overall length on the exterior is just over 9 3/4". These look to be made in 1978. The discoloration is very hard to see - so I either marked with arrows or circled depending on the location - only from normal wear. Shipping is $5.90 via economy shipping to Continental USA. Thanks!