It is heavyweight - 140lb300gsm. Watercolor papers made from cotton would hold more color and with perfect water absorption. The heavyweight watercolor papers are acid-free and chlorine-free, pH-neutral and archival, durable. BAOHONg Artists Watercolor paper is strong and durable for whether wet, dry or mixed media painting, and less likely to curl or warp.
Baohong Artists' Watercolor Paper Block, Textured 4.9x7, 20 Sheets, 100% Cotton, Acid-free, 140lb/300gsm, Watercolor Art Supplies for Wet, Dry
BAOHONG Postcards 6x4 Academy Watercolor Paper 100% Cotton - Israel
Baohong 300gsm Professional Academy Watercolor Sketchbook 100
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MEEDEN 10x7' Cotton Watercolor Paper Smooth Surface Watercolor Pad Hot Press 140lb/300gsm 20 Sheets
BAOHONG Academy Grade Watercolor Block, 100% Cotton, Acid-Free, 140LB/300GSM, Cold Press Textured, 20 Sheets per Block (Cold Press 7X10.2“)
Baohong artist Watercolor Notebook 300G Cotton Pure Watercolor
Baohong 300g Watercolor Paper Pad Water Color Aquarelle Sketchbook for Ink Colored Painting Drawing Paper Book School Supplies - AliExpress
Baohong : Academy : Pure Cotton Watercolour Paper Block : 300gsm : 20 Sheets - Blocks - Paper & Card - Surface
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Baohong Artist Watercolor Drawing Paper Pad 300g Cotton Aquarela Fine/Medium/Coarse Painting Sketchbook Art Supplies Watercolour - AliExpress