Most men are afraid of too bright clothes and floral prints. The maximum that they can afford is a shirt in a small flower, but in vain, because girls love flowers.
In addition, the floral print is in vogue, and even finds its place in men's accessories. For example, take a look at this Givenchy men's backpack.
If you think about it, a floral backpack is just as good as a camouflage backpack. In spring and summer, there are many flowers around, which means a floral backpack, in its own way, camouflage.