Going to start off by saying, buy this bag now before they run out of inventory.
I recently bought my 1st DSLR. A Canon SL2. This bag has plenty of room for the body and 15-55mm lens attached to it, plus the 55-250mm standing up in it's own compartment. Although you could have the 55-250 attached as well with room for 1 more lense. There are 2 removable velcro dividers that have 1/2" padding. (in my pics 1 of the dividers is parallel to the liner because I don't need it yet) Then there is a 1/2 padded removable liner that surrounds the entire circumference of the inside of the main compartment. I'd venture to say I have room for one more lens. Possibly the 10-18mm wide or a fixed length such as the 50mm or smaller. Seriously, I was worried this bag might be small because other reviewers said Camera plus one lens. Trust me, this bag is ample. I wouldn't call it a professional bag but it's definitely high-end amateur.
Since there is plenty of room in the main compartment. The pouch and zippered front are not squeezed out, so easy fit for car keys, phone, chargers, etc...
The shoulder strap expands farther than nessecary which is not a negative, although the shoulder pad is a little stiff. Maybe with time that will break in. The canvas structure seems to be at the least weather resistant if you get caught off guard, but I'm not going to endorse it as weatherproof and something to take into severe conditions.
For $20....YOU. CANT. GO. WRONG.