A well-packed gym bag holds three groups of things: clothes for the session, a clean change for afterwards, and a few small extras that save you from a wasted trip. If you pack a spare pair of underwear, a breathable training layer and a towel every time, you have already covered the items men forget most often.
Start with the bag itself
Before thinking about contents, think about layout. A bag with one big compartment turns into a pile by the third week. Look for, or create with small pouches, three zones:
- Clean zone for the change of clothes you put on after training.
- Used zone, ideally a separate wet pocket or a washable laundry pouch, so sweaty kit never touches clean clothes.
- Small items zone for keys, cards, earbuds, a lock and toiletries.
Unpack the used zone as soon as you get home. Most gym bag smells come from kit that sat zipped up overnight, not from the bag.
What to wear for the workout
Your training outfit decides how comfortable the next hour feels. The base layer matters as much as the shorts on top, because it is the piece that handles movement and sweat right against the skin.
Underwear for training
Pick a cut based on the session rather than habit. Leg day, sprints and jumping drills reward a secure, minimal fit; a long machine or cardio session often feels better with a little more coverage that does not ride up.
- Jockstrap: open back, supportive front pouch and almost nothing to bunch up during squats or lunges.
- Boxer briefs with hemmed legs: more coverage on the thighs, useful for cycling, rowing and treadmill work.
- Sport briefs: a middle ground with a firm waistband and no leg fabric.
Our mesh gym jockstrap uses a fine, soft and stretchy mesh, which suits hot, busy sessions. The cotton athletic supporter has a 3D cotton pouch with an elastic waistband and straps, for men who prefer the feel of cotton. If you want legs, the quick dry U-pouch boxer briefs are 91% modal and 9% spandex, with a mesh zone in the pouch and hemmed legs that stay put. For a deeper comparison of cuts, see our guide to the best men's underwear for the gym.
Shorts and top
Shorts should let you squat deep without pulling at the hips. A shorter inseam helps with mobility work, and zip pockets mean your key does not fly out on the rower. The cotton running shorts are 100% cotton with a 5-inch length that sits above the knee and three zip pockets, two at the sides and one at the back.
On top, a fitted tank keeps fabric out of the way when you press overhead or use cables. The Shape Up muscle tank top is made from a high-elastic, breathable material in black or white; it sits close to the body, so size up if you like a more relaxed feel.
The after-gym change
This is where most men cut corners, and it is the part that decides whether you feel fresh on the way to work, dinner or the sofa. Pack a full change, not just a T-shirt:
- A clean pair of everyday underwear, such as cotton briefs or trunks.
- Fresh socks.
- A dry top and, if you are heading somewhere, the trousers you will wear there.
- Flip-flops for the shower area.
For the clean pair, many men like a cotton blend after a sweaty session. The cotton sport briefs are 93.2% cotton and 6.8% spandex with a 1.5-inch logo waistband, and they are machine washable.
Small extras that save a session
These take little space and solve the problems that usually end a workout early or make the trip home uncomfortable.
| Item | Why it earns its place |
|---|---|
| Microfibre towel | Folds small, dries fast and covers benches between sets. |
| Water bottle | Saves buying drinks and keeps you sipping between sets. |
| Padlock | Many gyms provide lockers but not locks. |
| Laundry pouch | Keeps used kit away from clean clothes. |
| Travel toiletries | Shower gel, deodorant and a comb in mini sizes. |
| Earbuds and charger | A flat battery can stall a long cardio block. |
| Spare hair tie or headband | Small, cheap to lose, annoying to forget. |
Packing by session type
Your bag does not need to look the same every day. Adjust it to the plan:
- Strength day: jockstrap or sport briefs, fitted tank, short shorts, lifting gloves or chalk if your gym allows it.
- Cardio day: boxer briefs with hemmed legs, a light top, a second pair of socks for long runs.
- Pool day: swimwear, goggles, a second towel and a waterproof pouch for the wet kit.
- Straight from work: everything above plus a hanger or garment bag for your office clothes.
If you like wearing a jockstrap under looser layers on the way in, our article on wearing a jockstrap under gym shorts and sweatpants covers the details.
Keep the kit fresh
Rotate at least two training sets so one can dry fully while you wear the other. Wash mesh and modal pieces on a gentle, cold cycle and let them air dry; heat wears out elastic faster than anything else. Leave the bag open overnight once a week so it can air out.
Frequently asked questions
How many pairs of underwear should I pack for the gym?
Two: one to train in and one clean pair for afterwards. Changing out of sweaty underwear is the simplest way to feel fresh after a session.
Is a jockstrap good for the gym?
Yes, many men like a jockstrap for lifting, sprinting and jumping because it offers front support with very little fabric. For long cardio sessions, boxer briefs with hemmed legs are a popular alternative.
Should gym shorts have pockets?
Zip pockets are useful for keys and cards, especially on treadmills and rowers where open pockets can lose things.
How do I stop my gym bag from smelling?
Keep used kit in a separate pouch, empty the bag as soon as you get home and let it air out regularly.
Build your training kit
Start with the base layer: browse our sportswear collection for training underwear and tanks, and our shorts collection for the outer layer. Every order ships in discreet packaging.
