Posted by KIE Studio
on October 23, 2026
Arriving at class and realising you have left your water or your grip socks behind is one of those things that happens once and you never want to repeat. Knowing what to pack in your gym bag or for Pilates saves you rushing, forgetting things and the odd bad moment. The good news is that you do not need to carry much: a short, well-thought-out list has you covered.
Here is our checklist, split into the essentials, what makes life easier afterwards and what you can leave at home.
A good bag is not the biggest one but the one you can pack in five minutes with your eyes half closed. Think of it in three layers: what you wear, what you use during the session and what you need afterwards.
The essentials: do not leave without these
Water
Even if the workout is gentle, it is worth hydrating before, during and after. A reusable insulated bottle keeps water cool for hours and saves you buying plastic. The KIE bottle is made of insulated stainless steel and holds about 887 ml, enough for a long session.
The right clothes for your class
If you are going straight from home, you will already be wearing them. If you are coming from work, pack leggings, a top or sports bra and comfortable underwear. Choose pieces that are not see-through and stay in place: there is nothing more uncomfortable than adjusting your clothes between exercises.
Grip socks (for Pilates and barre)
Many studios require them, especially on the reformer. Always keep a spare pair in your bag, even if you think you will not need them.
Something to tie your hair back
In Pilates you spend a lot of time lying down, and a high ponytail can get in the way. A claw clip or a low braid is usually more comfortable. For more intense workouts, a headband helps keep hair off your face and controls sweat. You will find both in our accessories.
Choosing the clothes you pack
Pack your outfit as carefully as you would your keys. The most reliable approach is a matching trio you know works: bottoms that stay put, a top or bra with support and a layer for afterwards.
- Bottoms. Mid-rise leggings with a compressive feel suit floor work, because they stay in place when you roll and stretch. The Ofelia Flare Leggins in Milky list a mid rise, glute compression and Kosmo fabric on their product page, and the style is easy to wear on the way to and from class. Browse the full range in our leggings collection.
- Support. Pilates asks for a lot of range of movement, so check that your bra does not dig in when you lift your arms. The Halter Bra in black is one option; you will find more in our sports bras collection.
- Fit. If you are unsure which size to order, the KIE size guide will save you a return.
What makes life easier after training
A light layer
When you finish, your body cools down quickly, especially in autumn and winter. A zip-up jacket you can throw on over your top without changing is the most practical option. Take a look at our jackets and hoodies.
A small towel
Many gyms require a towel to use the machines. In mat Pilates, a towel on the mat is more hygienic if you share equipment.
A basic toiletry bag
Deodorant, moisturiser, a brush or comb and some wipes. If you shower at the gym, add flip-flops, travel-size shower gel and a large towel.
A bag for used clothes
A fabric bag or a waterproof pouch keeps sweaty clothes away from everything else. Your bag and whatever is in it will thank you.
A snack
If you train at lunchtime or go straight to work, a piece of fruit or a handful of nuts stops you arriving starving at your next meal.
Adjust your bag to the type of session
The checklist above is a base. These small additions depend on what you are doing:
- Reformer Pilates. Grip socks, hair tied low and a close-fitting top so nothing catches on the carriage.
- Mat Pilates or yoga. A small towel, a layer for the final relaxation and, if you prefer, your own mat.
- Strength training. Training shoes, a towel, a lock for the locker and a snack with some protein.
- Cardio or classes with lots of sweating. A change of top, an extra hair tie and a larger bottle.
- Barre. Grip socks and layers you can peel off as you warm up.
For the layer, a zip-up piece is easier to put on over damp skin than a pullover. The Lucy Zip Hoodie in Milky is made in Kosmo fabric with moderate compression according to its product page, which makes it a practical option to throw on after class.
What you can leave at home
- Your own mat, if your studio provides them. Ask before your first class.
- Too many changes of clothes. For a one-hour workout, a layer and a basic change are enough.
- Unnecessary valuables. Jewellery, non-sports watches and anything you would not want to lose in a locker.
- Trainers for Pilates. It is practised barefoot or in socks.
Pilates bag vs gym bag
| Pilates / barre | Gym | |
|---|---|---|
| Footwear | Grip socks | Training shoes |
| Towel | Small, optional depending on the studio | Usually required |
| Hair | Claw clip or low braid | Ponytail or headband |
| Extra layer | For the final relaxation | For the journey and between sets |
Hair and small details that help
These tiny items disappear at the bottom of a bag, which is why we keep them in a dedicated pouch:
- A pink hair clip or a brown hair clip, for lying-down exercises where a ponytail gets in the way.
- The black KIE high performance headband, for sessions where you want hair and sweat off your face.
- A spare hair tie, wrapped around the handle of your bag so it is always visible.
- Lip balm and a travel-size hand cream, because studios and gyms can be dry.
A sample list you can copy
- Water bottle, filled.
- Outfit for class (or a spare if you come from work).
- Grip socks and, if needed, training shoes.
- Hair clip, tie or headband.
- Light layer.
- Small towel.
- Toiletry pouch with deodorant, moisturiser and wipes.
- Bag for used clothes.
- Phone charger, headphones and card or membership pass.
- Snack.
Print it, save it on your phone or stick it inside your wardrobe door. After two or three weeks you will not need it.
A trick so you never forget anything
Pack your bag the night before and restock what you used as soon as you get home: wash the bottle, swap the socks and put your dirty clothes in the wash. That way, next time you only have to grab it and go. If you train several times a week, keeping a toiletry bag permanently inside your gym bag saves a lot of time.
Keeping your bag fresh
A bag that smells of last week's session is a bag you will avoid packing. Empty it after every workout, leave it open overnight to air and wipe the inside with a damp cloth every few weeks. Keep a few spare sachets or a small bag of baking soda in the toiletry pouch, and never leave a wet towel or bottle inside. Wash the pouch and the used-clothes bag with your next load. Small habits like these cost two minutes and make the whole routine feel easier, which is what keeps you going back to class week after week.
Frequently asked questions
What size bag do I need?
For Pilates or yoga, a roomy tote is enough. If you shower at the gym or carry a full change of clothes, a medium-sized sports bag is more comfortable.
Do I need to bring a mat to Pilates?
It depends on the studio. Most have mats for their students, but some people prefer their own for hygiene or comfort.
How much water should I bring?
It depends on the intensity, duration and temperature. For a one-hour class, a bottle of half a litre to a litre is usually enough.
Pack your bag
Water, comfortable clothes, socks if you need them, something for your hair and a light layer: that covers almost any workout. If you are missing a piece, discover the KIE Studio accessories, designed to go with you to class and through the rest of your day.
One last thought: a bag that is ready is the best motivation to go. If you want to know how we think about clothes that move from the studio to the rest of your day, read about KIE Studio. And if your Pilates class is the start of a busy day, the pieces in the essentials collection are easy to wear from class to coffee without changing.