Use these sturdy envelopes for collecting your own seeds or for storing purchased seeds when the original packets get wet or torn. Reusable paper with adhesive closure. Spaces for labeling seed type, date and collection details. 4 1/4" x 2 3/4" each. Set of 20 envelopes. Designed by a company in Sheffield, England, renowned for its high-quality gardening tools. A Williams-Sonoma exclusive.