Daiso Foam Rollers and Massage Balls: How to Choose and Use Them

Foam rollers and massage balls at Daiso Korea

Daiso Korea's sports aisle has a whole "foam roller / massage" section, from 45 cm (about 18 in) rollers to palm-sized massage balls, nearly all under KRW 5,000 (about US$3.50). Below are the main products we found on Daiso Mall, Daiso Korea's online store, at the time of writing. Some were shown as sold out, so check store stock in the Daiso Mall app. Dollar and variety stores in other countries often carry similar items; the tips on choosing and using them apply just the same.

Shopping in Korea? Useful words on the tags: 폼롤러 (foam roller), 마사지볼 (massage ball), 돌기형 (spiky/textured), 하드 (hard), 소프트 (soft). Massage balls and the mini roller fit easily in a suitcase; the 45 cm rollers are light but bulky.

Does foam rolling work?

A meta-analysis of 21 studies (Wiewelhove et al., 2019) sums up the evidence as "it helps, but only a little."

• Before exercise: flexibility improved by about 4% on average and sprint performance by about 0.7%. Jumping and strength barely changed.
• After exercise: perceived muscle soreness was about 6% lower.

The authors concluded that the evidence better supports foam rolling as part of a warm-up than as a recovery tool. What a KRW 5,000 roller can realistically offer is feeling looser and less stiff. It does not replace strength training or stretching.

Foam rolling myths

Which one should you buy first?

• New to rolling? Pick a smoother surface. Knobs concentrate your body weight on small points, so the pressure is much stronger.
• Hard to get up and down from the floor? Use a massage ball against a wall. You can stand and lean into a ball for your back and glutes, which is safer if your knees are sore or balance is a concern.
• Feet need their own tool. A small ball or foot roller works best and can be used sitting at a desk or in front of the TV.
• A 45 cm (18 in) roller is fine for one leg at a time or the upper back. Lying lengthwise along your spine needs a longer roller, and we did not find one longer than 45 cm on Daiso Mall at the time of writing.

How to roll each area

The basics: go slowly, spend 30 seconds to 2 minutes per area, and keep breathing normally. Most studies used times in this range. Keep it brisk before exercise and slower after exercise or before bed.

1. Calves: sit with the roller under your calves, hands on the floor behind you, and lift your hips slightly. Roll slowly from just above the ankle to just below the knee. Avoid the hollow behind the knee.
2. Hamstrings: same position with the roller under your thighs, from below the buttocks to above the knee.
3. Quadriceps: lie face down propped on your forearms with the roller under the front of your thighs. Roll from below the hip to above the knee, keeping your abs braced so your lower back does not sag.
4. Glutes: sit on the roller, cross one ankle over the opposite knee, and roll the side with the raised leg. With a massage ball, you can do this standing against a wall.
5. Upper back: lie with the roller across your back just below the shoulder blades, hands supporting your head. Lift your hips and roll only between the shoulder blades and below the shoulders. Do not roll down onto your lower back.
6. Soles of the feet: sitting in a chair, roll a ball or foot roller under each foot for 1–2 minutes. People with heel pain often do this, but there is little research on it, so use it alongside stretching (see stretches for plantar fasciitis).