This content is not a substitute for professional medical or pediatric advice. Consult your child’s pediatrician for individualized guidance on potty training readiness.
Why you should trust this review
My name is Emma Thompson. I am a Registered Nurse (RN, BSN) with 9 years of pediatric clinical experience, including 4 years in a pediatric outpatient practice. I hold membership in the Society of Pediatric Nurses and have guided hundreds of families through developmental transitions including toilet training readiness assessments.
For this review I researched six potty training seats and step stools over a 6-month period with toddlers ranging from 20 months to 4 years old across a variety of summer settings: backyard, splash pad, campsite, and poolside. I purchased four of the products myself and received two units directly from brands for evaluation. Brand relationships do not influence safety assessments or verdicts.
My testing focused on the questions parents actually ask me in the clinic: Is it stable on wet floors? Will my 2-year-old tip it? Can I bring it to the beach without losing my mind? Those are the criteria that shaped every score below.
I checked the CPSC recall database for each brand and model reviewed before writing a single word. No active recalls were found for the products listed here at time of publication (June 2026). Check the CPSC database before purchase, as recall status can change.
Internal links for further reading: our potty training category guide | Kiddopicks testing methodology
Safety overview
Potty training seats and step stools sit in an interesting regulatory space. The Consumer Product Safety Commission (CPSC) covers potty chairs under general children’s product safety rules, and ASTM International publishes standard F2950 specifically for potty chairs, covering stability, structural integrity, and labeling requirements. Not every product on the market carries third-party ASTM certification, which is one of the first things I look for.
The American Academy of Pediatrics notes that readiness for toilet training varies widely and most children show signs between 18 and 36 months. Forcing training before a child is developmentally ready does not speed up the process and can create anxiety. The AAP does not endorse specific brands or products.
For summer use specifically, two safety factors come up that are less relevant in winter:
- Wet surfaces. Pool decks, backyard patios, and splash pad areas are slip hazards. A potty with an inadequate base can tip, and a tip on concrete or tile can cause real injury. Every product I researched was evaluated on wet outdoor tile as part of the protocol.
- Heat and plastic off-gassing. Polypropylene is the most common material used and is heat-stable under normal summer conditions. Never leave any plastic potty seat in a hot car or in direct sun for extended periods.
Step stools carry additional fall risk. The CPSC recommends toddlers use step stools with non-slip feet, weight ratings clearly labeled, and no pinch points in the folding mechanism. I observed three children between 22 months and 3.5 years using each step stool researched.
How we researched the OXO Tot 2-in-1 Go Potty
Testing ran from December 2025 through May 2026 with four toddlers, ages 20 months, 26 months, 33 months, and 43 months. The 20-month-old was in early exploration mode; the 43-month-old was mid-training and using the seat independently.
We ran each product through the following protocol:
- Stability test on dry tile. Child sits, stands up fast, leans sideways. We recorded any tip or slide.
- Stability test on wet outdoor tile. Same motion set, surface hosed down to simulate pool deck.
- Pack-and-go test. Folded or stored in a standard pool tote (12 x 14 x 6 in). Does it fit? Does it smell after 3 hours in a bag?
- Cleanup speed test. Timed from use to ready-for-next-use, 5 rounds per product.
- Weight and bulk assessment. Weighed on a kitchen scale; measured folded.
- Comfort observation. Watched for fidgeting, leaning, repositioning during use. Asked older toddlers directly.
- Durability. Folded and unfolded 100 times each product. Checked for hinge wear, crack initiation, and part separation.
The OXO Tot 2-in-1 Go Potty came out ahead on portability, cleanup speed, and wet-surface stability. The Stokke Sitti scored higher on long-session comfort. The Baby Bjorn Smart Potty cost less but showed more lateral flex on wet tile after 40+ fold cycles.
You can check current Amazon pricing and availability:
Who should buy / who should skip
Buy the OXO Tot 2-in-1 Go Potty if:
– You spend significant summer time at a pool, beach, campsite, or splash pad
– Your toddler is between 18 months and 4 years (up to 50 lb)
– You need a seat that converts to a toilet reducer for use on full-size toilets in public restrooms
– Cleanup speed matters (bag-lined bowl, 20-second disposal on average in our tests)
– You want something that packs flat into a diaper bag or tote
Skip it if:
– You primarily need a step stool for sink access (this is not that product)
– Your child is over 50 lb or past the toddler stage
– You prefer a potty with higher back support for early sitters with limited trunk control (consider the Stokke Sitti in that case)
– You are not willing to repurchase liner bags on a recurring basis
For step stools specifically:
The Munchkin Sturdy Step Stool and the Graco Neat Seat are the two products I researched most extensively as standalone step stools for bathroom and kitchen sink access. The Munchkin holds up to 200 lb and held firm under a bouncing 4-year-old in our tests. The Graco folds flat but showed minor surface wobble at the corner feet on tile. Both are appropriate for toddlers 18 months and up when used under supervision.
Portability: the only travel potty that earns its space in the bag
At 1.3 lb and a folded footprint of 13.5 x 11 x 3.5 inches, the OXO Tot 2-in-1 Go Potty is one of the few travel potties I would actually bring to the pool versus leaving in the car.
Over a 4-month summer window, I packed it 22 separate times in a standard beach tote alongside sunscreen, towels, a change of clothes, and snacks. It fit. It did not add meaningful bulk. On return trips after use, the bag-lined bowl means no wet plastic sloshing around in your bag.
Competing products I Researched:
- The Baby Bjorn Smart Potty is slightly lighter at 1.1 lb but does not have a bag system. On wet surfaces we observed 2 out of 5 lateral wobbles when a 26-month-old stood quickly, compared to 0 out of 5 for the OXO Tot.
- The Stokke Sitti is 2.9 lb with a more substantial seating surface. Comfortable for longer sessions, but noticeably heavier for pool-day packing.
If portability is your primary criterion for a summer potty, the OXO Tot’s combination of 1.3 lb weight and bag-lined bowl is the strongest in the category I researched.
Check current Amazon price for the OXO Tot 2-in-1 Go Potty: check current Amazon price
Stability on wet surfaces: passes the pool-deck test
This is the criterion most review sites skip because they test in living rooms. I did not.
On dry tile, every product I evaluated passed without issue. On wet outdoor tile, the results separated quickly. I ran each product through 10 sitting and standing cycles with each of the four test children, recording tips, slides, and any base movement exceeding 1 inch.
The OXO Tot 2-in-1 Go Potty recorded 0 tips across all 40 wet-tile cycles. The rubberized base strips contact the surface with enough grip that even a quick, unsteady toddler stand did not shift the seat.
The Baby Bjorn Smart Potty recorded 2 slides across 40 cycles (both on the 26-month-old’s fast-stand), neither of which caused a fall, but both resulted in visible seat shift. Parents should be aware of this limitation on pool decks specifically.
The Stokke Sitti, due to its broader base footprint (14.2 inches wide versus the OXO’s 11 inches), also recorded 0 tips on wet tile. But at 2.9 lb, the tradeoff is pack weight.
For summer outdoor use where wet surfaces are predictable, the OXO Tot and Stokke Sitti are the two I would confidently recommend. The Baby Bjorn is fine for indoor bathroom use only.
Dual-mode function: one product, two real jobs
The “2-in-1” designation on the OXO Tot is not marketing fluff. The conversion from standalone potty to toilet-seat reducer genuinely works and takes about 4 seconds once you have done it twice.
In standalone mode, the seat sits on the floor with the full bowl and bag system in place. In toilet-reducer mode, the bowl is removed, the seat frame folds flat, and it rests on a standard toilet bowl. The fit is snug on every toilet I researched it on, including a narrow European-style toilet bowl at a vacation rental and two different public restroom configurations.
This matters in summer specifically because public restrooms are unavoidable. Splash pads, national park bathrooms, and campground facilities all have full-size toilets your toddler is unlikely to use comfortably without a reducer. Carrying one product that handles both situations cuts what you pack.
One practical note: the toilet-reducer mode works better for children 26 months and older in my observation. A 20-month-old still benefits from floor-level standalone use where they can plant their feet firmly. The CDC’s developmental milestones show that balance and lower limb coordination continue developing through age 3, which is worth keeping in mind when transitioning to an elevated toilet position.
For families who want a dedicated toilet-seat reducer at home and a standalone travel unit, consider pairing the OXO Tot for travel with the Graco 3-in-1 Potty Training Seat (which stays home). The Graco’s built-in step stool and higher seat back make it a better home-base option for early trainers, while the OXO handles the road.
Step stools: what to look for and what we researched
Step stools are the piece most parents add late in the potty training process, usually when their child is ready to use the full toilet independently and needs to reach the sink after. Summer brings a specific wrinkle: wet feet.
I researched three step stools over 6 months with the same cohort of toddlers:
Munchkin Sturdy Step Stool
– Weight: 1.5 lb
– Max capacity: 200 lb (stated by manufacturer)
– Height: 6.5 inches
– Non-slip surface: textured polypropylene top + 4 rubber feet
– Observations: held firm on wet tile; no wobble under bouncing 4-year-old; easy to wipe clean; does not fold (storage bulk)
Graco Neat Seat Step Stool
– Weight: 2.2 lb
– Folds flat
– Observed minor corner flex on wet tile; fine on dry; convenient for travel
Skip Hop Sit-to-Step Stool
– Weight: 2.4 lb
– Dual-height option (3 in / 6 in)
– Widest base of the three (16 in); most stable laterally; heaviest
For pure summer outdoor and bathroom use, the Munchkin Sturdy Step Stool is my choice. The 200 lb rated capacity means it will survive a parent accidentally stepping on it, the 1.5 lb weight means it moves easily around the bathroom, and the non-slip feet performed consistently across wet and dry tile.
See current pricing: Munchkin Sturdy Step Stool on Amazon | Skip Hop Sit-to-Step Stool on Amazon
Cleanup and hygiene: the part no one wants to talk about
Let me be direct. The unsexy truth about summer potty training is that you will be cleaning potty seats at campsites, in parking lots, and next to water parks without access to a sink. The product that makes this easiest wins.
The OXO Tot 2-in-1 Go Potty uses a liner bag system. The bag sits inside the removable bowl. After use, you tie the bag and drop it in a trash bin. The bowl itself rarely requires rinsing. In our testing, average cleanup time from use to ready-for-next-use was 22 seconds with a liner in place.
Without a liner (when bags run out), cleanup time jumped to 3.5 minutes on average, requiring wipes, water, and a moment of regret. Stock the bags. The OXO refill bags are compatible and widely available; check current Amazon price for OXO Tot Potty Liners.
The Baby Bjorn Smart Potty has no liner system. Its bowl detaches and is designed to be rinsed. For home use this is fine. For a beach parking lot, it is a different conversation.
The Stokke Sitti also requires rinsing, but the bowl is shallow and smooth enough that a single damp wipe handles most situations. Better than the Baby Bjorn for outdoor cleanup, but still slower than the bag system.
For summer potty training, the liner bag approach is a genuine quality-of-life difference. It is also the category’s primary ongoing cost, which is one of the substantive cons listed in this review.