If you have spent time around a competitive swim team, you have probably seen swimmers practicing in what looks like a second, baggier suit over their regular one, or a loose mesh short. That is a drag suit, and it is one of the oldest and simplest training tools in the sport. The concept is straightforward, but how and why swimmers use drag suits, and how to get the most from one, is worth understanding. This guide explains what a drag suit is, the science of why it works, its benefits, and how to use one effectively in your training.

What Exactly Is a Drag Suit?

A drag suit is a swimsuit designed to create extra resistance in the water, worn over a swimmer's normal practice suit. There are two common forms. The first is a loose, baggy suit, sometimes simply an old or oversized suit, that billows and traps water as you swim. The second, and more purpose-built, is a mesh suit made of a porous polyester construction designed specifically to create drag by letting water flow through and around it, increasing resistance. Either way, the goal is the same: to make the water feel heavier and harder to move through during practice. Drag suits are typically worn during regular training sets, then removed for the fast swims, time trials, or races where you want to feel light and quick.

Why Do Swimmers Wear Drag Suits?

The logic behind a drag suit is a form of resistance training. By increasing the resistance you work against, the suit forces your muscles to work harder to maintain any given pace, which builds strength and conditioning over time. There are several specific reasons swimmers and coaches use them.

Building Strength and Power

Swimming against extra drag is like adding resistance to any workout. Your pulling and kicking muscles must generate more force to move you through the water, which develops the strength and power that translate into speed when the resistance is removed. This makes drag suits popular for sprint and strength-focused training in particular.

The 'Light and Fast' Effect

One of the most valued benefits is psychological and physical at once: after training in a drag suit, taking it off for a fast swim or a race makes you feel dramatically lighter and faster through the water. Your body has adapted to working against more resistance, so swimming without it feels easy and quick. Many swimmers use a drag suit through their training and warm-up, then strip it off right before a hard effort or a race to chase that lighter, faster sensation.

Conditioning and Toughness

Beyond raw strength, training against constant extra resistance builds aerobic and muscular conditioning and a measure of mental toughness, since every length is a little harder. This added challenge can make a swimmer more resilient and better conditioned over a long training block.

How to Use a Drag Suit Effectively

A drag suit is simple, but using it well still takes some thought.

• Wear it over your regular practice suit during training sets, not for racing. The point is to remove it for fast swims.

• Use it consistently through a training block so your body adapts, rather than only occasionally.

• Take it off for goal-pace work, time trials, taper swims, and races, so you feel the light-and-fast benefit when it counts.

• Choose a fit that creates noticeable drag without being so bulky that it ruins your technique or falls off; a mesh trainer or a deliberately loose suit both work.

• Pair it thoughtfully with other training, recognizing that it adds load, so balance it with adequate recovery.

Drag Suits vs. Other Resistance Tools

A drag suit is the simplest member of a family of resistance training tools. Drag chutes, small parachutes towed behind the swimmer, create more substantial and adjustable resistance. Resistance bands and tethers anchor the swimmer in place against a stretchy cord for stationary power work. Power towers and weighted systems add load through a pulley. Compared with these, a drag suit offers a modest, constant, always-available resistance that you can wear for an entire practice without any setup, which is exactly its appeal: it is the low-effort, low-cost way to add resistance to every length you swim. Many swimmers use a drag suit as their everyday baseline and reserve chutes and bands for specific power sets.

Are Drag Suits Worth It?

For competitive swimmers, a drag suit is an inexpensive, low-risk addition to training that delivers real strength, conditioning, and a genuine light-and-fast feeling when removed. It will not transform a swimmer on its own, since technique and overall training matter far more, but as a simple way to add resistance to daily practice and to make race-day swimming feel quick, it earns its place in many swimmers' bags. For age-group and developing swimmers, it is also a gentle, equipment-light introduction to the concept of resistance training. If you want a straightforward way to make practice work a little harder for you, a drag suit is a sensible, time-tested choice.

Double-Suiting and How Drag Suits Caught On

The drag suit grew out of a simple, long-standing practice in competitive swimming: wearing extra material to make practice harder. Generations of swimmers have trained in an old, worn-out suit, or worn a second suit over their first, a practice often called double-suiting, specifically to add drag in training and then enjoy a lighter feeling when they stripped down to a single suit for racing. The purpose-built mesh drag suit simply formalized this idea into a durable, porous garment designed to create resistance reliably. The underlying logic, train heavy to race light, has remained constant. Many coaches still have their swimmers double-suit or wear a drag suit through training blocks, removing it for time trials, taper sets, and competition. It is one of the oldest tricks in the sport precisely because it is cheap, simple, and genuinely effective at adding everyday resistance.

Who Benefits Most, and How to Care for One

Drag suits are most valuable for competitive swimmers building strength and conditioning, and especially for sprinters and those in strength-focused training phases who want to overload their stroke against constant resistance. Developing age-group swimmers can use them too, as a gentle, equipment-light introduction to resistance training, though true beginners should prioritize comfortable technique first. Whoever uses one, basic care keeps it lasting: rinse it in cool fresh water after each practice to remove chlorine, which degrades fabric over time, and let it air dry away from direct sun rather than leaving it balled up wet. A mesh or polyester drag suit is inexpensive and durable when cared for, and because it adds resistance to every length you swim with zero setup, it remains one of the easiest ways to make ordinary training work a little harder for you.

The light-and-fast effect deserves a closer look, because it is both physical and psychological, and it is a big part of why swimmers love drag suits. Physically, training against constant extra resistance conditions your muscles to produce force against more drag, so when the suit comes off, the same effort propels you faster and the water feels almost frictionless. Psychologically, that sensation of suddenly slicing through the water builds confidence right when you want it, before a fast swim or a race. Many swimmers deliberately wear a drag suit through warm-up and early race-day preparation, then peel it off for their event to chase exactly that feeling of speed and lightness.

The flip side is knowing when not to use one. A drag suit belongs in training, not racing, and not in the fast, race-pace work where you are trying to rehearse genuine race speed and feel. Wearing it for goal-pace sets, time trials, or taper swims would defeat the purpose, since those efforts are meant to feel like racing. The discipline is simple: train in it to build strength and conditioning, then remove it whenever you want to swim genuinely fast, so the resistance is always working for you rather than against your race preparation.

In short, a drag suit is a small, time-tested investment that adds genuine resistance to everyday practice and delivers a real light-and-fast payoff on race day. It will not replace good technique or smart training, but as a simple, durable, low-cost way to make every length work a little harder for you, it has earned its enduring place in competitive swimmers' bags for good reason.

Frequently Asked Questions

What is the point of a drag suit?

A drag suit deliberately increases water resistance during practice by being loose or made of mesh, so your muscles must work harder to maintain pace. This builds strength and conditioning over time. When you remove the drag suit for a fast swim or race, you feel noticeably lighter and quicker through the water. It is a simple, inexpensive resistance training tool used widely in competitive swimming.

How does a drag suit work?

A drag suit works by creating extra resistance in the water, either through a loose, baggy fit that traps and billows water or a porous mesh construction that lets water flow through and around it. This added drag forces your pulling and kicking muscles to generate more force to move you forward, training strength and conditioning. Removing it for fast swims then produces a lighter, faster sensation.

Do you wear a drag suit over another suit?

Yes. A drag suit is worn over your regular practice suit, adding a layer of resistance during training sets. You keep your normal suit on underneath for coverage and support, with the drag suit on top to create the extra drag. You remove the drag suit, leaving your regular suit on, for fast swims, time trials, and races where you want to feel light and quick.

Are drag suits good for beginners?

Drag suits are most useful for competitive swimmers building strength and conditioning, but they can be a gentle, low-cost introduction to resistance training for developing age-group swimmers too. For true beginners still learning the basics of the stroke, technique and comfortable swimming should come first; a drag suit adds load that is more valuable once a swimmer has a solid stroke and is training to get faster.