This is just what I was looking for!!!
Has just enough room to fit my macbook pro 14" (in either orientation though when vertical you can't snap it closed) and my lunch. The strap is wide and comfortable and overall the quality is superb. Surprised it stays put when riding even without a cross strap.
Also really like the reflective strip :)

Glad to have finally found a successor to my old 2-button Rapha "bonk bag." The Road Runner 4.2 L Musette Sling Bag allows room for an A4 (~U.S. letter) legal pad, iPad (also sometimes a keyboard), Bullet Journal and in its single pocket my pens and cords pouch - and nothing else. Having to triage your work accessories is healthy! The strap is comfortably just wide enough, and the adjusting buckle is smooth when switching from sling to crossbody to messenger carries etc. The large reflective stripe was a lagniappe. What it's missing that similar brands have is weight. The point of an envelope bag like this is lightness. This featherweight musette is plenty sturdy.

This! This bag! The first sling bag that fits me really well. The search for a sling ends here. Why i love slings, super easy to access my camera, swing it up front, take it out, snap and off you go again. The internal pocket is abit elevated so its easy to reach for the camera at the same time avoids the camera from clunking with other hard items that stays at the bottom of the main compartment. The ease of use doesnt stop there, you dont have to open any flap or unzip or whatever, the button is there to secure the stuff but so far i havent used it no matter how loaded it was and stuff refuses to fall out. The capacity is perfect for what i need. Anything bigger itll be too heavy if loaded out, so its perfect. Amazing how much you can say about a simple bag. On top of everything, the team is freaaaaking awesome. Basically it was out of stock, they stitch up a new one and ship out the same day 🔥🔥🔥 cheers guys!

This! This bag! The first sling bag that fits me really well. The search for a sling ends here. Why i love slings, super easy to access my camera, swing it up front, take it out, snap and off you go again. The internal pocket is abit elevated so its easy to reach for the camera at the same time avoids the camera from clunking with other hard items that stays at the bottom of the main compartment. The ease of use doesnt stop there, you dont have to open any flap or unzip or whatever, the button is there to secure the stuff but so far i havent used it no matter how loaded it was and stuff refuses to fall out. The capacity is perfect for what i need. Anything bigger itll be too heavy if loaded out, so its perfect. Amazing how much you can say about a simple bag. On top of everything, the team is freaaaaking awesome. Basically it was out of stock (my bad for overlooking it), shared my concerns then first thing monday morning they stitch up a new one and ship out the same day 🔥🔥🔥🔥🔥 cheers guys!

This! This bag! The first sling bag that fits me really well. The search for a sling ends here. Why i love slings, super easy to access my camera, swing it up front, take it out, snap and off you go again. The internal pocket is abit elevated so its easy to reach for the camera at the same time avoids the camera from clunking with other hard items that stays at the bottom of the main compartment. The ease of use doesnt stop there, you dont have to open any flap or unzip or whatever, the button is there to secure the stuff but so far i havent used it no matter how loaded it was and stuff refuses to fall out. The capacity is perfect for what i need. Anything bigger itll be too heavy if loaded out, so its perfect. Amazing how much you can say about a simple bag. On top of everything, the team is freaaaaking awesome. Basically it was out of stock, they stitch up a new one and ship out the same day 🔥🔥🔥🔥🔥 cheers guys!