PWRRUN+ Explained
In brief: PWRRUN+ is Saucony's TPU-based expanded foam, their answer to the bead-foam category that Adidas Boost helped popularise. Steam-fused TPU beads form interconnected cell structures that deliver soft, luxurious cushioning with exceptional durability and temperature stability. The current formulation is lighter than earlier versions, and the same compound also appears as a premium sockliner in many Saucony shoes.
What is PWRRUN+?
PWRRUN+ is Saucony's TPU-based expanded foam, a midsole compound built from thousands of tiny thermoplastic polyurethane beads. Where standard EVA foam is moulded as a single solid mass, PWRRUN+ steam-fuses individual beads together so that each one keeps its own springy cell structure. The result sits in the same family as the bead-foam cushioning that Adidas Boost made famous. It is the soft, plush, energetic end of Saucony's midsole range, chosen when a shoe is meant to feel cushioned and forgiving underfoot rather than firm and fast. It pairs comfort with genuine long-haul durability.
How the bead-foam construction works
The magic of PWRRUN+ is in the steam-fusing process. Expanded TPU beads are placed in a mould and bonded with steam, creating interconnected cells that compress and rebound rather than crushing flat. This gives the foam two qualities that matter to runners: a soft initial feel and a consistent return of energy step after step. TPU is also far more temperature stable than EVA, so the cushioning behaves the same on a frosty winter morning as it does on a warm summer evening. EVA tends to stiffen in the cold and soften in the heat, while PWRRUN+ holds its character across conditions.
Lighter, and built to last
One of the historic trade-offs with TPU bead foams was weight, and Saucony has worked to address that. The current PWRRUN+ formulation is noticeably lighter than previous versions, narrowing the gap with lighter EVA-blend compounds while keeping the plush feel. Durability remains the standout trait. Because each fused bead resists permanent compression, PWRRUN+ holds its cushioning over far more miles than a typical single-density foam. That makes it a sensible choice for high-mileage daily training, where a midsole that flattens early simply means buying new shoes sooner.
Where you will find it
PWRRUN+ shows up in two ways across the Saucony line. In some shoes it is the full midsole, delivering its soft, durable ride underfoot. In many others it appears as a premium sockliner, adding a layer of plush, responsive comfort directly under the foot even when a different foam forms the main midsole. Daily trainers are its natural home, where comfort and longevity matter more than outright race-day speed. Models such as the Saucony Ride and Hurricane lines showcase what PWRRUN+ does best: dependable, cushioned miles day after day.
How it compares to other Saucony foams
Within Saucony's range, PWRRUN+ sits between the firm, foundational PWRRUN and the high-performance PEBA foams like PWRRUN PB and PWRRUN HG. PWRRUN+ is softer and more durable than basic PWRRUN, but it is heavier and less explosively responsive than the nitrogen-infused PEBA compounds reserved for racing. Think of it as the comfort-and-longevity option rather than the speed option. If you want a plush daily trainer that keeps its cushioning for the long haul, PWRRUN+ is the foam to look for; if you chase fast race times, the PEBA foams are designed for that job.
PWRRUN+ at OD's Designer Clothing
At OD's Designer Clothing we stock Saucony daily trainers built with PWRRUN+ cushioning, including models from the Ride and Hurricane families, chosen for the comfort and durability that everyday training miles demand. Our footwear team can talk you through the differences between Saucony's foams so you pick the ride that suits your mileage and your feet. We offer next-day delivery and free click and collect, and you are welcome to visit our St Helens store to try a pair on, feel the cushioning underfoot, and get fitted properly before you commit.