BACKPACK: suitable for above 3 years old,durable 300D polyester;11"L x 17.3"H x 5.1"D (44x28x13cm),1* big compatments,two side mesh pocket. LUNCH BAG: Polyester Lining Material,EVA+PE Cotton, 7.48inch(L)x3.14inch(W)x9.84inch(H), , Insulated lunch box with mini Bottle Holder pocket. PENCIL CASE: 8.6Lx1.7Wx4.3H inch, can be used as pencilcase,cosmetic bag,coins bag,etc. Suitable for school, office, traveling and so on. USE:best gift for elementary school kids/primary student/children/unisex teens to school,outdoor,sports,hiking,and any daily use. CUSTOMIZED:Personalized back pack 3 in 1 Backpack Set for Women Teen Youth Kids Backpack School Bag Set with Lunch Bags and Pencil Case. Personalized backpack,Perfect size for elementary school kids / unisex-children / unisex-teens / primary students.Casual Easy style using for school,outoor sport travel.