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MidWest Exercise Pen review: the flexible containment pen
The MidWest Exercise Pen is the flexible way to give a puppy a safe daytime space bigger than a crate: eight folding panels you shape into a playpen, block off a room, or clip onto a crate. It is not escape-proof for climbers.
Quick answer
The MidWest Exercise Pen is the flexible way to give a puppy a safe daytime space bigger than a crate: eight folding panels you shape into a playpen, block off a room, or clip onto a crate. It is not escape-proof for climbers.
MidWest Exercise Pen
Best for
- Daytime containment beyond the crate
- Puppy-proofing a corner or room
- People who want a reconfigurable barrier
Think twice if
- You have a climber or jumper
- You need a covered, fully secure space
- Floor space is very limited
A crate is for sleeping and short stints; a pen is for the hours in between. The MidWest exercise pen gives a puppy room to move, play, and settle without the run of the whole house, and it folds away when you are done.
How it actually works
Eight connected metal panels flex into a circle, square, or rectangle, or stretch out to wall off a doorway or a corner. It comes in several heights, clips to some crates to make an attached run, and flat-folds for storage. Set it on a washable mat over hard floors.
What reviewers and owners agree on
Flexibility is the headline. The same pen becomes a playpen, a room divider, or an outdoor potty area, and reconfigures in seconds. It is affordable, it folds flat, and for daytime containment it saves a lot of "where is the puppy" stress.
Where it frustrates people
It is not escape-proof. A determined climber or jumper can get over a short pen, and an unanchored pen can be pushed across a slick floor, so pick enough height and anchor it. Taller pens take more floor space, and bare panels offer no cover or shade.
How it compares
| Product | Type | Grows / sizing | Storage | Tier | Best for |
|---|---|---|---|---|---|
| MidWest iCrate | Folding wire crate | Divider grows with puppy | Flat-folds for storage | Very affordable | House-training & most puppies |
| Diggs Revol | Collapsible framed crate | Fixed sizes | One-motion collapse, wheels | Premium | Safety, design, frequent moves |
| MidWest Exercise Pen | 8-panel folding pen | Reconfigurable shape | Flat-folds | Affordable | Daytime containment & play |
| Snuggle Puppy | Plush heartbeat toy | One size | n/a | Low | First nights & crate anxiety |
| KONG Puppy | Rubber chew toy | Sizes by weight | n/a | Very low | Teething & enrichment |
| Product | Durability | Portability | Design & polish | Ease of use | Value |
|---|---|---|---|---|---|
| MidWest iCrate | 5/5 | 5/5 | 3/5 | 5/5 | 5/5 |
| Diggs Revol | 5/5 | 3/5 | 5/5 | 2/5 | 5/5 |
| MidWest Exercise Pen | 4/5 | 5/5 | 3/5 | 5/5 | 4/5 |
| Snuggle Puppy | 4/5 | 4/5 | 4/5 | 5/5 | 4/5 |
| KONG Puppy | 5/5 | 4/5 | 4/5 | 5/5 | 5/5 |
Scoring reflects synthesized consensus from independent 2026 testing roundups and verified-owner feedback.
The short version
What works
- Reconfigures into many shapes
- Doubles as a room divider or barrier
- Affordable and folds flat
- Several heights available
- Clips to some crates
What to weigh
- Not escape-proof for climbers
- Can slide on slick floors
- Taller pens need real floor space
- No cover or shade
Who should buy it
Anyone who needs a safe daytime space bigger than a crate, or a quick way to block off part of a room during puppyhood.
Who should skip it
If your puppy climbs or jumps, or you need a fully secure covered space, a taller or covered solution is safer.
Bottom line
The containment workhorse of puppyhood. Buy enough height for your dog and anchor it on slick floors.
Check price on AmazonFAQ
How tall should a puppy exercise pen be?
Tall enough that your dog cannot jump or climb out. Active or larger puppies need the taller panel heights; err up, since you cannot add height later.
Can the exercise pen be used outdoors?
Yes, it works indoors or outdoors, though bare panels give no shade and should be anchored on grass or hard ground.
Exercise pen or crate for a puppy?
Both. The crate is for sleep and short, secure stints; the pen is for supervised daytime space to move around. They solve different problems.
How we assessed this. A research-based review drawing on independent 2026 testing roundups and verified-owner feedback. Not a paid placement and not a hands-on lab test. We do not copy customer reviews or display Amazon ratings; the score is our own editorial judgment.
Affiliate disclosure. As an Amazon Associate, MyNubs earns from qualifying purchases. Links on this page are affiliate links; we may earn a commission if you buy, at no additional cost to you.
Specifications and availability current as of October 2, 2026. Confirm price, model, and current rating on the live Amazon listing before buying.