Laptop Sleeve - 30 minute design challenge Laptop Sleeve - 30 minute design challenge from Martijn Van Gelderen Laptop Sleeve - 30 minute design challenge Laptop Sleeve - design of a laptop bag, done in 30 minutes (including design and 'the making of..'). gLike Laptop Sleeve - 30 minute design challenge Laptop Sleeve - design of a laptop bag, done in 30 minutes (including design and 'the making of..'). Industrial Design Share R 7 n Martijn Van Gelderen Design Manager at Nuna International - www.nuna.eu LEIDEN, Netherlands Follow Contact