What to look for
An opening that stays open. A stiff rim or spring opening matters more than anything else. You need one-handed access without looking down at the bag.
A real closure. Drawstring, magnetic, or hinge closure keeps treats from spilling when you bend over or when an enthusiastic dog bumps into you.
Belt clip plus waist options. Clips break; belt loops last. Being able to wear it on a belt, a waistband, or with a shoulder strap covers every outfit and every walk.
Washable. It will get gross. Machine-washable fabric or a wipe-clean lining will save the pouch from the trash within a month.
A side pocket. Room for the little things: poop bags, your phone, a clicker. One less thing in your hands.
Comfortable wearing positions. Most pouches ride on the hip or in front. Front carry gives the fastest access; hip carry stays out of the way on walks. Try both for a week before you decide the pouch is wrong; often it is the position, not the product.
Winter-proofing. Soft treats freeze into rocks in cold weather. In winter, keep the pouch inside your coat between reps, or switch to freeze-dried treats that stay edible when cold.
What to avoid
Deep, narrow bags. If you have to dig for a treat, it is too deep. You should be able to grab one in about a second, by feel alone.
No closure at all. One enthusiastic jump and treats rain everywhere, which becomes its own unplanned training session.
Pouches that swing or bounce. If it flaps around on walks, the dog fixates on the pouch instead of on you.
Loud velcro closures. The ripping sound can startle noise-sensitive dogs right at the moment you are trying to reward them. Magnetic or drawstring closures are quieter.
Fabric you cannot clean. A pouch that is not washable becomes a science experiment within a month. If the care label says spot-clean only, keep shopping.
Think about how you train, not just how you walk. If you do most training in the yard, a simple waist pouch is plenty. If you train on the go, look for one that clips to a bag strap or belt loop without tools. And if you train in the rain, a water-resistant shell keeps treats from turning to mush.
Borrow before you buy, if you can. An hour of real use tells you more than any product page. What feels fine empty in the store feels very different loaded with a cup of treats on a long walk.
And keep a spare in the car. The day you forget the pouch is the day the best training opportunity of the week appears. A five-dollar backup pouch has saved more training sessions than any premium feature ever will.
Our take
You do not need the most expensive pouch on the shelf. You need one that stays open, closes shut, and survives the washing machine. Anything beyond that is style, and your dog does not care about style.