A gym bag works best when it is packed once and left packed. Here is what earns a permanent place.

The seven essentials

  1. Flip-flops or shower sandals. Non-negotiable. Communal shower floors are a reliable route to athlete's foot and verrucas. This is the item people skip and regret.
  2. Shampoo and body wash. The core of it. One dual-chamber bottle covers both in a single item, which matters when you are packing at 6am.
  3. A quick-dry towel. Microfiber packs smaller and dries faster than cotton, which is the difference between a fresh bag and a musty one.
  4. Deodorant. Solid rather than aerosol — it will not leak and it is welcome in a shared changing room.
  5. A full change of clothes. Including underwear and socks. Putting the sweaty set back on undoes the shower.
  6. A waterproof bag for wet kit, so it does not soak everything else.
  7. Moisturiser if gym showers leave your skin tight. Often overlooked and cheap to solve.

What to leave out

  • Full-size bottles. Heavy, bulky, and you will use a fraction of them before they leak.
  • A hair dryer. Most gyms have them, and yours will not fit.
  • Anything glass. Tile floors and glass are a bad combination.
  • Strong fragrance. Shared space. Keep it modest.

The bag-packing principle

Every item you have to remember is an item you can forget. The most reliable gym bag is one where the toiletries never leave it — a dedicated set that lives in the bag permanently, separate from your bathroom at home.

At $9.99 for a bottle covering two products, keeping a duplicate set in the bag is a cheap way to remove a recurring decision from your week — and US shipping is free however small the order.

Gym shower etiquette, briefly

  • Keep it short. Others are waiting.
  • Wear something to and from the shower.
  • Take your bottles with you rather than leaving them on the ledge.
  • Rinse the cubicle if you have left hair behind.

The 30-second version

Flip-flops, one bottle that does hair and body, quick-dry towel, solid deodorant, clean clothes, wet bag. Pack it once. Build your gym bottle.