Never heard of it!? It's not 3-needle bind-off, is it? Though that's not really anything like mattress...no idea!
*Dream Swatch in Madil Eden Bamboo
On the needles:
*Isabella from Spring Knitty
*Striped hoodie from Nursery Knits
*Tomato from Knitting Daily
I'm hunterjenn on Ravelry. Come find me!