Hobonichi Techo Cover ONE PIECE magazine Thousand Sunny LOGBOOK One Piece Collaboration - Sunny Go Size: Original (A6, pocketbook size) Material: Vegetable-tanned leather It has been stored in a dark place, but due to the nature of vegetable-tanned leather, some sun tanning is visible. As you use it, the surrounding areas will also tan and become more familiar, but please refrain from purchasing if you are concerned.