NBA players wear low tops because lighter, lower-cut shoes let them move faster and change direction more freely, and research shows high-top shoes don’t actually prevent ankle sprains. The shift started around 2009 when Kobe Bryant debuted the Nike Kobe 4, and within a few years, low tops went from controversial to standard across the league.
The Kobe 4 Changed Everything
For decades, basketball shoes meant high tops. From Chuck Taylors to Air Jordans, the assumption was that a tall collar around the ankle kept players safe. Kobe Bryant challenged that in 2009 when he worked with Nike designer Eric Avar to release the Kobe 4, a low-cut basketball shoe that looked more like a soccer cleat than anything you’d see on an NBA court. Bryant himself called it the boldest move he and Nike ever made together.
The shoe drew immediate skepticism from players, coaches, and fans. But Bryant wore it through an NBA championship run, and the results spoke louder than the criticism. Within a few years, other stars followed. Today, many of the most popular performance basketball shoes sit at or below the ankle, and even mid-top models have gotten progressively lower over time.
High Tops Don’t Prevent Ankle Sprains
The biggest reason players felt comfortable switching to low tops is straightforward: the science never supported the idea that high tops protect ankles. A prospective, randomized study followed 622 college basketball players across an entire intramural season, tracking 39,302 minutes of game time. Players were assigned to wear either high-top shoes, high tops with inflatable air chambers, or low tops. Out of 15 total ankle injuries that season, 7 occurred in high tops, 4 in low tops, and 4 in the inflatable high tops. The injury rates showed no significant difference between any group.
This finding surprised a lot of people, but the explanation makes sense when you think about what actually happens during an ankle sprain. The forces involved in a sudden inversion, like landing on another player’s foot, are far greater than what a fabric or leather collar can resist. A shoe collar might slow the initial roll by a few degrees, but it can’t stop the kind of violent, unexpected movements that cause sprains in a full-speed NBA game.
Less Weight Means Better Performance
Low-top shoes are lighter than high tops, and that weight difference matters more than most people realize. Research on trained runners found that adding just 100 grams per shoe (about 3.5 ounces) reduced endurance performance by roughly 22% in a time-to-exhaustion test at maximum aerobic speed. Energy efficiency also worsened by 7 to 10 percent at high intensities with that same added weight. While basketball isn’t continuous running, NBA players sprint, jump, and change direction hundreds of times per game. Over 48 minutes, even a small weight savings on each foot compounds.
A typical high-top basketball shoe weighs 14 to 18 ounces. A modern low top often comes in around 10 to 13 ounces. That difference of a few ounces per shoe translates to quicker first steps, slightly higher vertical leaps, and less fatigue in the fourth quarter. For elite athletes operating at margins where fractions of a second determine outcomes, shedding unnecessary shoe weight is an easy win.
How Low Tops Stay Stable Without a Collar
Modern low-top basketball shoes aren’t just high tops with the collar cut off. Designers replaced that upper ankle material with engineering features built into the sole and base of the shoe. The most important of these is the lateral outrigger, a widened section of the outsole that extends beyond the normal footprint on the outer edge of the shoe. This wider base catches your foot before it can tip past the point of no return during a hard cut or an off-balance landing. Early Kobe models used prominent outriggers specifically to address the ankle stability concern, and the feature became standard across performance basketball footwear.
The design philosophy varies by player type. Guards who rely on quick crossovers and deceptive footwork, like Kyrie Irving, tend to prefer shoes with rounder outsole edges that allow sharper lateral movement. Shooters and bigger players who plant more often benefit from more aggressive outriggers that prioritize stability. This customization is something a generic high-top collar never offered. Instead of one-size-fits-all ankle coverage, modern shoes can be tuned to how a specific player actually moves.
Players Use Braces Instead of Shoe Collars
Many NBA players who wear low tops also wear lace-up ankle braces underneath. This combination gives them the ankle support they want without sacrificing the weight and mobility advantages of a low-cut shoe. Research comparing different ankle support methods found that lace-up braces provided stability during cutting drills that was comparable to athletic taping, while being significantly less restrictive. Players rated braces as more comfortable than tape and equally comfortable to wearing no support at all during straight-line sprints.
This approach lets players separate two jobs that used to be bundled into one shoe. The shoe handles traction, cushioning, and court feel. The brace handles ankle stabilization. A lightweight ankle brace weighs far less than the extra material in a high-top collar, and it wraps the joint more precisely. For players with a history of ankle sprains, this combination provides better protection than a high top ever did, while still allowing them to wear the lightest, most responsive shoe available.
Position and Playing Style Still Matter
Not every NBA player wears low tops. Some big men who spend more time posting up than sprinting still prefer mid-tops for the added sense of security around the ankle. Players recovering from ankle injuries sometimes temporarily move to higher-cut shoes for psychological comfort, even if the biomechanical benefit is minimal. Personal preference plays a real role. If a player feels more confident in a mid-top, that confidence affects performance too.
But the overall trend is clear. Guards and wings, who make up the majority of NBA rosters and cover the most ground per game, have overwhelmingly adopted low tops. The combination of lighter weight, greater ankle mobility, improved shoe engineering, and the availability of separate bracing has made the old high-top model unnecessary for most players. What Kobe Bryant treated as a radical experiment in 2009 is now just how basketball shoes work.