300gsm Cotton Watercolor Cards with Envelopes – 4×6" & 5×7" | Sets of 50 or 100

Premium 300gsm cotton watercolor cards — blank, smooth, and ready to paint. Made from thick cotton paper that resists pilling and handles wet media beautifully, these cards are ideal for handmade greeting cards, art prints, and painted gifts. Each card comes with a matching envelope. Available in flat or foldable styles, in 4×6" or 5×7" sizes, and in sets of 50 or 100.

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Available Options

50 Sets – 4×6" Flat — Classic postcard format; great for painted postcards and art prints
50 Sets – 4×6" Foldable — Fold-over card format; ideal for greeting cards and handmade notes
100 Sets – 4×6" Flat — Bulk flat postcard format; perfect for workshops and large projects
100 Sets – 4×6" Foldable — Bulk foldable format; great value for regular card-makers
50 Sets – 5×7" Foldable — Larger foldable format; more space for detailed paintings and messages
100 Sets – 5×7" Flat — Bulk larger format; ideal for studios, classrooms, and workshops

Features

300gsm cotton paper — thick, durable, and resistant to pilling and buckling
Smooth surface — suitable for watercolor, ink, pencils, crayons, and mixed media
Available flat or foldable — choose the format that suits your project
Matching envelopes included — ready to send straight away
Ideal for classrooms, studios, workshops, and personal projects

Pair It With

Complete your card-making setup with these collections from My Crafty Corner:

Frequently Asked Questions

What is the difference between flat and foldable cards?
Flat cards are single-panel postcards — ideal for painted art prints and mailed postcards. Foldable cards fold in half to create a traditional greeting card format with an inside message area.

What media can I use on these cards?
The 300gsm cotton surface handles watercolor, ink, pencils, crayons, and light acrylic washes. The thick cotton paper resists pilling and buckling with wet media.

Which size should I choose?
The 4×6" size is the standard postcard format — compact and easy to mail. The 5×7" size gives more space for detailed paintings and longer messages.

Are these suitable for workshops and classrooms?
Yes — the sets of 50 and 100 offer great value for group projects, art classes, and workshops where multiple cards are needed.