A1 Envelopes - Pastels Mix - 3 5/8 x 5 1/8 (for response cards) (50pcs) Envelope Size: 3 5/8" x 5 1/8" Fits Card Sized: 3 1/2" x 5" Envelope weights vary (light purple: 60lb standard / pink, light blue, light yellow & light green: 70lb high-quality) Square Flap (gummed) 50 envelopes / 10 each of: pink, light blue, light yellow, light green, light purple