HIGH QUALITY-Thick papers offer smooth writing experiences without any fear of feathering and seepage. Our improved, high-quality paper is designed for superior ink seepage - proofing, resistant from the damage by light and air.windrio calendars simply look beautiful on any wall . windrio calendars do not curl up, rip out and fall off your wall like other cheap and Thin calendars often do. We use eco-friendly paper and do not use high-risk chemicals, so you can use it with peace of mind.