Brendan Donovan × Blumaka

All-Star Grip,
every game.

Quick cuts, hard stops, and explosive throws demand a foot that stays locked to the footbed, not sliding inside the cleat. NonSlip insoles grip from first step to last, so none of Brendan's push-off gets lost to slip.

$60· Outlasts 3 to 4 pairs of cleats. About 6 cents a mile.

Only pay if you perform.

4.5/5
Brendan Donovan holding his Blumaka NonSlip insole
Brendan DonovanSeattle Mariners
2025 MLB All-Star
90% Of athletes run faster*
17% More cushioning*
14% Higher energy return*
1,000 Mile guarantee

*Independent biomechanical performance testing. Cushioning and durability independently verified by Heeluxe, measured against the average aftermarket insole.

90-Day Test DriveFull refund if they don't perform, even worn
1,000-Mile PromiseCushioning guaranteed to last
85% recycled foamHigh-performance build
Brendan Donovan in his batting stance
The Athlete

Built to keep him on the field.

Brendan Donovan is a Seattle Mariners third baseman, an MLB All-Star, and a longtime Blumaka supporter who demands elite performance on the field and carries himself the right way off it. That same demand for consistency is why NonSlip insoles are laced in for every rep and every game, keeping his foot locked to the footbed so nothing gets lost between the plant and the throw.

Game Day Prep

Inside Brendan's routine.

Here’s how an All-Star gets ready, from the ground up, to succeed on game day.

Brendan Donovan taking batting practice
Watch · 0:30
Blumaka NonSlip insole in Brendan Donovan's cleat
The Fit

Pull the stock insole. Drop it in.

Brendan swaps the stock insole for NonSlip insoles in under two minutes. Same cleat, same feel underfoot, just a grip layer that locks his foot to the footbed so every plant, cut, and throw stays clean. Available in the Max Cushion profile, with three arch heights to match his fit.

Only pay if you perform.

The NonSlip System

What keeps him stepping forward.

NonSlip technology

A high-friction top layer locks Brendan's foot to the footbed on every cut, throw, and sprint, so none of his push-off leaks to a micro-slide inside the cleat.

Max Cushion, engineered

85% recycled ETPU foam adds up to 17% more cushioning and 14% higher energy return, softening the pounding of a 162-game season.

Built for the grind

Outlasts three to four pairs of shoes and comes backed by a 1,000-mile cushioning guarantee, the same setup, every rep, every game.

Built to last 1,000 miles. Outlasts 3 to 4 pairs of cleats.

The Testing

Proven, not claimed.

90%
of athletes ran faster
90%
increased stride length
80%
increased lower-body stability
80%
started & stopped faster

Roster & credibility

  • MLB
  • NFL
  • PGA
  • NBA
  • NHL
  • MLS
  • EFL
  • ACC
  • SEC
  • Big 10
  • Big 12
  • Pac 12

Attribution

Speed, stability and stride figures come from independent biomechanical performance testing. Cushioning and durability claims are independently verified. Measured against the average aftermarket insole.

Only pay if you perform.

What players say

Locked in, on the record.

Mike Yastrzemski
MLB · San Francisco GiantsMike YastrzemskiOutfielder

“I'll change my bat, glove, and cleats, but never my Blumaka NonSlip insoles.”

Pablo López
MLB All-Star · Minnesota TwinsPablo LópezPitcher

“I won't pitch without them.”

Grant Holmes
MLB · Atlanta BravesGrant HolmesPitcher

“Blumaka NonSlip insoles will forever be in my cleats when I'm pitching.”

170 Reviews

NonSlip Performance Insoles

$60.00
Run Faster Increase Stability Reduce Risk Of Injury Start and Stop Faster
Austin Morris
Austin Morris
NCAA, Alabama Crimson Tide
Blumaka insoles enhance stability and balance on the mound, improving control and energy transfer. They also boost comfort.
Mike Yastrzemski
Mike Yastrzemski
MLB, Atlanta Braves
You'll find these bad boys in my shoes everyday.
TJ Shook
TJ Shook
MLB, New York Mets
Blumaka truly has helped me pitch better, I've been using them for two weeks and I jumped 2-3mph in average velocity.
Brendan Donovan
Brendan Donovan
MLB, Seattle Mariners
A game changing product... 
I won't play without them.

Pair 1

Choose your pack

Set up each pair on its own. Sizes are chosen per pair.

This product is in stock now!
Or 4 interest-free payments of $15.00 fortnightly with Afterpay
Secure Checkout icon icon icon icon icon icon
Size Guide Profile Chart
Before you buy

Straight answers.

How do NonSlip insoles help on the field? +

A high-friction top layer locks your foot to the footbed so lateral cuts, quick throws, and hard stops don't cost you a fraction of a second to slide, paired with 85% recycled ETPU foam for extra cushioning and energy return. It's the same setup Brendan wears every day.

What's the difference between NonSlip and Carbon Elite? +

The NonSlip Performance Insole covers grip, cushioning, and energy return for everyday performance. It's what Brendan wears day to day. Carbon Elite adds a carbon composite forefoot plate on top of that same NonSlip grip, built specifically for athletes managing forefoot injuries like turf toe. Brendan leaned on Carbon Elite to get back from his own turf toe injury.

Which insole should I choose? +

For everyday performance, grip, and cushioning, the Max Cushion profile covers most athletes. It's Brendan's go-to. If you're managing turf toe or forefoot pain, Carbon Elite's added plate is built for that. It comes in a single profile, sized to your shoe. For NonSlip, there are three arch heights; use Find my fit to match yours.

Can an insole really make a difference? +

It's tested, not claimed. In independent biomechanical testing, 90% of athletes ran faster and 80% were more stable. The NonSlip grip layer is built to keep every ounce of that push-off from leaking away inside the cleat.

How long do they last? +

NonSlip insoles are backed by a 1,000-mile cushioning guarantee and outlasts three to four pairs of cleats. If the cushioning gives out before then, we'll make it right.

What about returns? +

Free shipping on every order in the United States, shipped within 24 hours (excluding weekends and holidays). Backed by a 90-day performance guarantee: if you're not completely thrilled, return them within 90 days for a full refund, even after wearing them. Start a return at help@blumaka.com.