Mount boards, pads and paper for pastel artwork, made by Clairefontaine.

This is what Clairefontaine has to say about their Pastelmat range:

"Pastelmat is Manufactured by Clairefontaine in FranceManufactured by Clairefontaine in France, Pastelmat® has a legendary reputation among the world's foremost pastelists. Artists around the world have observed that Pastelmat® "tames the pastel" by providing exceptional control over the medium."

Their PastelGrain range is a bit different:

"PastelGrain paper with a surface that is both intense and delicate. This special card, dedicated to dry pastel drawing, allows for the multiplication of pigments without saturation or fixative. With its more pronounced grain surface than Pastelmat, it offers new experiences for pastel drawing and allows for accentuating textural effects. Resistant to erasing, it allows for beautiful blending and also resists wet techniques: even when wet, this card retains its unique properties! Easy to use, it is suitable for beginners and offers a new experience for experienced and professional artists!"