Sumo Sole Gen 4: Limit Breaker
This is a special edition collaboration slipper between Notorious Lift and Colton Engelbrecht, "The Limit Breaker."
Colton currently holds the #1 Overall ATWR powerlifting total with 2645lbs/1200kgs. He also holds the #1 ATWR totals in the 110kg, 125kg, and 140kg weight classes, cementing his legacy as a true Limit Breaker. And, he's still just getting started.
Limited Seasonal Colorway. No Restock.
PRODUCT DESCRIPTION
Sumo Sole Gen 4 is a zero-drop training slipper with a wide EE toe box, dual-strap lockdown, and an ultra-thin sole built for maximum floor contact. IPF approved.
- Novus 2.0™ Griptech — Anatomically shaped sole engineered for maximum traction on any surface. Purpose-built for the squat, bench, and deadlift.
- Ultra-Low Stack Height — Minimal sole thickness creates an uninterrupted connection to the floor. Maximum ground feel, zero interference.
- Dual-Strap Lockdown — Signature dual straps provide superior mid-foot security, preventing forward and lateral foot movement under load.
- Wide EE Toe Box — Gives your toes room to splay and engage naturally, without excessive movement.
- High Side Walls — Reduce unwanted lateral foot movement and keep the foot centered on the platform.
- Reinforced Heel Support — Locks the heel in place. No rearward slip under load.
- Flexible Construction — Moves with your foot naturally. No rigidity, no restriction.
Best For — Sumo deadlift · Conventional deadlift · Squats · Bench · Competition day · All accessory work
SIZING RECOMMENDATIONS
For most customers, we recommend ordering true to US shoe size.
If between sizes, we recommend ordering the next size up for more comfort. Go with the smaller size if you prefer a snug fit in your lifting footwear.
CARE INSTRUCTIONS
Hand Wash: Soak in a mixture of cold water and liquid laundry detergent. Use a soft bristle toothbrush to scrub the upper, then the sole. Once clean, rinse and air dry.
Do not tumble dry.
SHIPPING INFORMATION
Standard domestic processing time is 1-3 business days.
Standard international processing time is 3-5 business days.
During periods of abnormally high order volume, such as launch weekends, please allow an additional 2-3 business days for order processing.
CUSTOMS FEES & DUTIES
All orders placed outside the USA may be subject to duties and taxes that vary depending on the destination country. You may have an option to prepay the taxes or pay them once you receive your order.
Duties are not included in the shipping cost. Failure to pay the customs fees/import duties will lead to a failed delivery and disposal of the sent goods. In this case, we are unable to offer a refund.
To make your shopping experience even better, we encourage you to visit our Distributor Page to shop with ease. By purchasing through our authorized distributors, you’ll enjoy lower shipping costs and avoid any unexpected custom duties and fees.
| EU | US MEN'S | US WOMEN'S | CM |
| 35 | 3.5 | 4.5 | 21.4 |
| 36 | 4 | 5 | 22.1 |
| 37 | 4.5 | 5.5 | 22.7 |
| 38 | 5.5 | 6.5 | 23.4 |
| 39 | 6.5 | 7.5 | 24.0 |
| 40 | 7.5 | 8.5 | 24.7 |
| 41 | 8.5 | 9.5 | 25.4 |
| 42 | 9 | 10 | 26.0 |
| 43 | 9.5 | 10.5 | 26.7 |
| 44 | 10.5 | 11.5 | 27.3 |
| 45 | 11 | 12 | 28.0 |
| 46 | 12 | 13 | 28.6 |
| 47 | 13 | 14 | 29.3 |
| 48 | 14 | 15 | 29.9 |
| 49 | 15 | 16 | 30.6 |
Minimalist Footwear
WIDE TOE BOX
Ensures your toes have ample room to splay and properly grip the floor, which improves balance and coordination.
ZERO HEEL-TO-TOE DROP
The sole is perfectly flat, with no heel-to-toe drop, and no unnecessary underfoot cushioning that could compromise stability.
SLIPPER CONSTRUCTION
SSG4 forgoes bulky materials and padding, instead opting for a breathable & lightweight knit that contours to your foot like a sock.
Novus™ 2.0 Grip Tech
Our newest outsole is 2mm thin, with a 1.8mm tread depth. The total stack height of only 3.8mm makes Sumo Sole Gen 4 the thinnest powerlifting slipper on the market.
Constructed using a proprietary custom-formulated high-friction rubber compound, Sumo Sole Gen 4 provides unmatched grip on all surfaces, for all lifts.
a true barefoot experience
Crafted with a flexible outsole, this slipper moves seamlessly with your foot, promoting natural biomechanics that enhance stability, improve power transfer, and strengthen key muscles for lifting.
Featuring our proprietary Novus™ Griptech Rubber Compound, it delivers exceptional traction while maintaining the perfect balance of durability, flexibility, stability, and ground feel.
Sumo Sole Gen 4 - Frequently Asked Questions (FAQ)
What makes Sumo Sole Gen 4 ideal for sumo deadlifts?
Sumo Sole Gen 4 features an anatomically shaped wide toe box that allows maximal foot flare in the sumo stance, dual adjustable straps for lockdown without compression, and a 3.8mm thin sole for unparalleled ground feel. This combination improves stability and power off the floor in wide‑stance pulls.
Can I squat in Sumo Sole Gen 4?
Yes, but it depends on your technique. Sumo Sole Gen 4 is excellent for low‑bar squatters who prefer a flat shoe, and for lifters with ankle mobility that doesn’t require a heel. If you need heel elevation for upright squatting, choose Ronin Lifters.
How does the dual‑strap system work?
The two independent Velcro straps allow you to customize fit across the midfoot and forefoot separately. This prevents the “binder‑clip” effect of single‑strap slippers—you can secure your foot without squeezing the toes, maintaining circulation during heavy pulls.
Are Sumo Sole Gen 4 shoes federation‑approved?
Yes. Sumo Sole Gen 4 meets all federation requirements for powerlifting and strongman where flat‑soled footwear is permitted. They are approved for use in IPF, USAPL, USPA, PA, and all other federations globally.
Do Sumo Sole Gen 4 shoes stretch over time?
The engineered knit upper will minimally relax after several wears, but the straps ensure consistent fit throughout the shoe’s life. They do not stretch significantly in length, so choose your size carefully using our measurement guide.
Can I wear Sumo Sole Gen 4 for conventional deadlifts?
Absolutely. The 3.3mm sole and grippy outsole provide excellent floor contact for conventional pulls. Many lifters prefer the wide toe box even for conventional stance—it allows the feet to grip the floor more actively.
How do I clean my Sumo Sole Gen 4 slippers?
Hand wash in cold water with mild detergent, gently scrub soiled areas, rinse thoroughly, and air‑dry. Do not machine wash or dry—the straps and knit may degrade. Avoid harsh chemicals that could break down the adhesive bonding.
What’s the difference between Gen 4 and previous Sumo Sole versions?
Gen 4 features a refined toe‑box shape (wider at the metatarsals, tapered at the heel), updated knit material that’s more durable and breathable than Gen 3, and a significantly upgraded sole with Novus™ 3.0 griptech rubber for improved grip performance and stability.
Should I wear socks with Sumo Sole Gen 4?
Yes. Most lifters wear high socks for hygiene and added protection for the shins during deadlifts.
How long do Sumo Sole Gen 4 slippers typically last?
With regular powerlifting use (deadlifts, squats , bench press 3‑4 times weekly), expect anywhere between 12‑24 months of service before the outsole shows significant wear or the straps lose adhesion. The knit upper is reinforced at high‑stress points for durability.
