What to Wear for a Massage in Siam Square

Traditional Thai massage

You stay fully clothed. The shop hands you loose cotton trousers and a wrap top at check-in, and you change into them before the treatment starts; no oil is used, so the therapist works entirely through the fabric with palms, thumbs, elbows and assisted stretches. Nothing you arrive wearing matters much beyond being easy to change out of, since you'll be in the shop's own clothes for the whole session.

Oil and aromatherapy treatments

This is the one treatment type where you undress, down to your own underwear, and lie under a towel that the therapist moves and repositions as they work, uncovering only the area currently being treated. If you'd rather keep more covered than that, say so at check-in; most shops here will work with disposable underwear or accommodate a request, though it's worth asking rather than assuming.

Foot massage

You stay in your own clothes entirely, with trousers rolled up to the knee if you're wearing long pants. This is typically done in a reclining chair, often in a shared lounge rather than a private room, so there's no changing involved at all beyond removing your shoes and socks. Booking as two changes the room question rather than the clothing one, and which shops actually take a couple is a separate list.

Footwear

Shoes come off at the door for every treatment type at all six shops, so slip-on sneakers, sandals with a secured back strap, or simple flats are the easiest choice for getting there and back. Flip-flops or unsecured sandals are fine for the walk itself but not ideal on the busy sois around Siam Square, where uneven pavement and the occasional food-cart puddle make a secured heel strap worth having. Heels are the one genuine no: nothing about the walk-in shopfronts or the sixth-floor mall corridors calls for them, and you'll be barefoot again within minutes of arriving regardless.

Two words cover the only adjustment most people need once the clothes are sorted: say bao bao for lighter pressure and nak nak for firmer, and the rest of the sequence explains when to use them.

This is what the six shops hand you at check-in against what you have to arrive with, compiled from their published inclusions and treatment menus in August 2026. Anything marked as provided is included in the treatment price.

If gear inclusions genuinely matter to your choice of shop, the fuller comparison of what each of the six actually includes in its price sits on our prices guide, alongside what each treatment costs.

Siam Square sits east of BTS Siam, reached on foot from exit 6 for the Soi 5 and Soi 6 shops, or via the skywalk from exit 4 to Siam Square One for Treasure Spa and Let's Relax. Bangkok's daytime temperatures run roughly 27 to 35 degrees Celsius through most of the year, so the practical dress code for the walk over is simply light, breathable fabric and a hat or sunglasses if you're out at midday; none of it needs to be technical or purpose-bought. The skywalk stretch to Siam Square One is covered and shaded, but the street-level walk to Soi 5 or Soi 6 is open pavement with limited shade, so plan for a few warm minutes either way, and Treasure's private suites mean you change in your own room rather than a shared area once you arrive.

For women

For an oil treatment, disposable or your own underwear is what you're in under the towel; a sports-bra style top is comfortable if you'd rather keep more on than standard underwear, and it's fine to ask about this at check-in. For a Thai massage, the shop's cotton wrap top is loose enough to wear over your own underwear without issue. There's no local modesty dress code enforced by any of the six beyond what's already described, since these are private treatment rooms or curtained-off spaces, not public areas.

For men

The same cotton clothes and towel rules apply regardless of gender; there's no separate men's protocol at any of the six shops. The one practical note is that a Thai massage's assisted stretches sometimes involve the therapist's knee or foot bracing against your leg or back for leverage, which can feel unfamiliar the first time but is standard technique rather than anything to be concerned about.

Color and fabric, at a glance

None of this affects the treatment itself, since you'll be in shop-provided cotton or a towel either way, but it matters for the walk over and for what you're most comfortable arriving and leaving in.

• Jewelry, especially rings and bracelets, since a therapist's grip and stretches can catch on them
• Camouflage-patterned clothing, restricted for civilians under Thai law
• Tight jeans or restrictive clothing that's slow to change out of before a Thai massage
• Heels or unsecured sandals, since shoes come off at the door regardless
• Heavy makeup you'd mind smudging into a face-down cushion or towel
• Large bags with no clear place to store them; keep valuables to what fits in a small pocket or your own zip pouch
• Strong perfume or cologne, since aromatherapy oils are already part of several treatments here

Take off rings, bracelets and watches before the treatment starts; most shops offer a small dish or tray for this at the changing area, but it's worth double-checking rather than assuming. Contact lenses and glasses aren't an issue for a Thai massage the way they might be for water-based activities, since you're lying face-up or face-down on a dry mat, not submerged; if you wear glasses, they simply come off and go wherever you leave your other belongings. Tie long hair back loosely if a face-down cradle position bothers you with it loose, though this is comfort preference rather than a shop requirement.

Light makeup is fine; heavier makeup risks transferring onto a face cushion during face-down positioning.

A herbal compress treatment uses luk pra kob, a steamed cotton ball of lemongrass, kaffir lime, turmeric and camphor, pressed and rolled over specific muscles; it's warm rather than hot, but it can leave a faint herbal scent on your clothes afterward, so don't plan to head straight into a client meeting in the same outfit if that would bother you. A body scrub treatment involves an exfoliating product worked over bare skin before a rinse, so wear something you don't mind changing out of quickly, and expect your skin to look slightly flushed for a short while after.

Most of what to wear here comes down to picking easy-off clothes and shoes for the walk over, since the shop provides the rest once you're inside. For what actually happens once you're changed and on the table, our first-time guide walks through the full sequence step by step, and the massage in Siam Square catalogue lists every shop's own provided-versus-bring details side by side.