puddinlegs

Only when I'm commuting with a change of clothes, other wise, no. Never. Not once. In decades. And never plan to. Never used a saddle bag either.

Ride kit: two plastic tire irons, a spoke wrench, 3 small hex wrenches (replaced with a multi tool for long rides away from home), a spare tube, sometimes two for long rides, a dollar bill, and a business/ID card. For shorter rides that don't require two water bottles, most of the repair kit lives a ziplock bag in an old water bottle that has the top cut off. It goes in the rear bottle cage. For a two water bottle ride ( one water, the other a diluted electrolite mix), the repair bits live in jersey pockets. Cell phone in ziplock bag w/a bank card in the right rear pocket, small crank bros. handpump/mulit-tool and tube. in the left. Middle is for clothing.Sometimes the pockets can get a bit crowded if arm/knee warmers/toe covers and a light nylon vest are involved and layers need to be shed, but even then it's no big deal. Extra food can fit as well. Travel light, travel fast. You'll be ok.

rms13

Here's a related question. Does anyone use any kind of small bag to organize everything that you put in your jersey pocket? I use a small seat bag for essentials (tube, co2, tire levers) and the main reason I do is because I'm afraid I'll forget something essential if it's not always strapped to my bike. But if I had a bag that I could keep that stuff plus multi tool and just have to worry about grabbing that one pack and sticking it in my jersey pocket I might be able to convert to be a cool kid

Lazyass

I don't but only because I use a saddle bag. I have thought about ditching it. If you go to Walmart in the camping section there's actually a lot of stuff that could work. They have waterproof cell pouches, bags, and other stuff. Someone mentioned that they use a pencil case. I thought that was a genius idea so I went to walmart and they have a padded pencil case for $4. It has a small zippered pouch that fits my cell, and a main pouch that everything in a saddle bag would fit in with room to spare, and it's small enough for a jersey pocket. In the outdoor section there was a sunglass pouch. It looks almost exactly like a small saddle bag without straps. My cell fit in it and think it had room for a tube, tire lever and c02 carts. I may go back and buy it. The website lists it at $19.99 but in the store it was $3.95. The pencil case was probably the best thing but the sunglass case looks cooler and isn't as bulky.

Outdoor Products Sunglass Case, Orange - Walmart.com

big chainring 

On 100 mile rides, 2 bananas, 1 water bottle, and a $1 bill. No wallet. No phone. No ID

Spare tire under the seat, and a frame pump.

Rode that way for years.

Sy Reene

I have something similar to this.. and it's bike related and somewhat eco-conscious
https://jet.com/product/product/cb77...QrgaAklG8P8HAQ

Ben I.

I used to wear a Camelbak but since I got my road bike and have two water bottle mounts I haven't worn it since and love it. As far as carrying the essentials...

-2 bottles of water, usually both with Nuun tablets because the help the water taste better.
-Saddle bag has: tire levers, 2 spare tubes, 2 CO2 cartridges and inflator, tire boot, multitool, and very lightweight lock for quick stops so someone can't just walk/ride off with my bike
-On rides longer than ~70 miles I attach a small top tube bag to carry more food/gels/chews
-Jersey pockets -- pocket 1) bars/chews/gels, pocket 2) phone, Nuun tablets, more bars if longer ride, pocket 3) keys, more bars if longer ride

f4rrest

@rms13 this, fits in my pocket next to my phone. I put a few patches and 5mm hex key in it too.

Carbonfiberboy 

Or use a saddle bag that clips to the saddle rails and doesn't have a velcro strap around the seatpost. One does see many riders with the little tell-tale velcro holes in their shorts.