Thank you for looking! This is ox fabric with a moderate thickness. If you like it, please consider purchasing it (*^^*) [Foldable Lesson Bag] 2100 yen ・Height 30 x Bottom width 40 cm, Gusset 5 cm ・Outer fabric: Canvas Blue-gray ・Lining: Cotton Ecru ・No interfacing Due to the nature of canvas fabric, it may fade. For washing instructions, please research ✍ Canvas Care Instructions and make your own decision. ・・・・・・・・・・・・・・・・・・・ ☻ Name tape add-on 30 yen ☻ Loop end for string add-on 160 yen (Decorative bead) makes the string easier to pull! ☻ Patch/Tag add-on 80 yen~ If you wish to add these, please comment before purchasing! ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ Each item is made with care, but it is a handmade item made with a home sewing machine by an amateur. Please understand this before purchasing (*^^*) Would you like to give it as a gift? Category...Lunch bag/Lunch box bag Category...Preschool/Kindergarten entrance set Category...Lesson bag Category...Gym clothes bag/Change of clothes bag Category...Placemat/Lunch mat