I ordered the same sleeve for myself and my wife and 2 different sizes. My MacBook m1 fits perfectly while the sleeve is slightly big for my wifes MacBook air.
Has inside pocket for charger and small accessories . They have not metnioned anywhere about pockets , bnot sure why since the pockets are quite useful and should be advetised.
Have been using it for 15 days now and it can get slightly dirty, but the sleeve can be washed without any damage ( so far :P)