"The Swaledale casket is made using pure virgin wool, supported on a strong recycled fibreboard frame. Wool is a fiber with a true "green" lineage that is both sustainable and biodegradable. The interior is generously lined with cotton and attractively edged in jute.
Independently tested and accredited for strength and weight bearing, the Swaledale's unique design combines the highest environmental standards with an attractive and soft feel. Designed to differ from the traditional wooden casket, it offers a contemporary style with comfortable handling. The concept is completed with a personalized embroidered woolen name plate. All the materials used in the Swaledale casket are readily biodegradable and suitable for cremation and all types of burial."
I don't think it's actually knitted, but may be the closest thing. Actually, I'd really just like to be wrapped in a blanket and buried in a "green cemetery" but a nice bit of wool wouldn't hurt my feelings at all. I'll try to knit a shroud before I kick the bucket so that no survivor has to knit on on #50 needles using 8 strands of Wool Ease Thick n Quick. :-)