Left: leather 革 (Horned 廿 animals have a skin 口 of leather.), right: convenient 便 (The person 亻likes it furthermore 更, if it's convenient) [further 更 = The sun 日 goes with each unit of length 丈 further and more]
A horned 廿 animal seen from above with a backbone 丨 and broad hips 一 has a skin 囗 of leather around its torso. - Also this radical 皮 stands for leather.
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