The Momotaro Notepads come in two colors, Classic Yellow and Pale Pink. They're printed on GF Smith Colorplan 270gsm, with two sheets bonded together so they stay light but hold their shape in your pocket.
The paper feels almost like fabric. You'll want to touch it. Inside, 70 sheets of Munken Print Cream 90gsm with a dotted grid. Copper wire-o binding so they lay flat.
They're roughly the same size as a phone. That was on purpose. I see these as an extension of the app's proposition, made to help you create better focus habits.