These bright envelopes are made out of high quality, semi-transparent vellum paper. They're fantastic for birthday cards, invitations, get well cards, thank you cards, and more! Their bright and fun color makes them excellent for a number of special occasions including graduations, parties, and baby showers.Details: Available in multiple colors4.75" x 6.5" (A6)28lb-30lb paper50 envelopesSemi-translucent vellum paper