new junior high school student schoolbag backpack men‘s large capacity travel computer backpack female primary school student waterproof burden reduction

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model a black and red combo (no password lock)(A款黑配红（无密码锁）) type a black with silver (no password lock)(A款黑配银（无密码锁）) model a black and red combo (with password lock)(A款黑配红（带密码锁）) type a black with silver (with password lock)(A款黑配银（带密码锁）) type a black with yellow (with password lock)(A款黑配黄（带密码锁）) type a black with green (with password lock)(A款黑配绿（带密码锁）) type b black and red combo (with password lock)(B款黑配红（带密码锁）) model a black and red combo (with password lock + charging)(A款黑配红（带密码锁＋充电）) type a black with silver (with password lock + charging)(A款黑配银（带密码锁＋充电）) model b black and red combo (with password lock + charging)(B款黑配红（带密码锁＋充电）)