Here are a couple links to shops I found near Sim Lim Square area. Prices were SG prices, but there were some bargains.
This shop at 45 Deskar Road had a big selection and if I was a bit smaller I could have had a wonderful chest protector for 30SGD.
http://www.chongaik.com.sg/
Also, saw this shop on Bencoolen Road walking toward Sim Lim from the Deskar shop. They had a nice selection as well.
http://reginaspecialties.com.sg/
This shop at 45 Deskar Road had a big selection and if I was a bit smaller I could have had a wonderful chest protector for 30SGD.
http://www.chongaik.com.sg/
Also, saw this shop on Bencoolen Road walking toward Sim Lim from the Deskar shop. They had a nice selection as well.
http://reginaspecialties.com.sg/