Shimmer Blue Satin A2 (4-3/8-x-5-3/4) Envelopes 25-pk - 118 GSM (32/80lb Text) PaperPapers 4X5 holds paper folded 4-ways Invitation, Response and DIY Greeting Envelopes Blue Satin A2 (4-3/8-x-5-3/4) Virgin Fiber 118 GSM (32/80lb Text) Finish: Satiny Metallic (this has a smooth, satin-like metallic finish)