https://shp.ee/sfu3bms Most pharmacy sells this one! You can consider getting this, delivery is quite fast too. Otherwise can try buying frida mom’s from amazon, but will take longer deliver altho it’s cheaper
Bought this from babycentral https://baby-central.com.sg/products/lansinoh-cold-warm-post-birth-relief-pad?gclid=EAIaIQobChMImb_Dou6RgAMV2ZpmAh1LSwg7EAQYASABEgLX_vD_BwE
I bought mine at hospital pharmacy. I think most hospitals carry them.
You can buy at pharmacy, watson, unity, polyclinic.