Where to buy a good sleeping bag?

Ni hao.
Last time i went camping i was 13, long time ago. I remember sleeping bags were 30cm diameter and soaked water like a sponge. I saw my friend's modern sleeping bag last week, and was surprised it was only 15 cm diameter, weighed 1.1 kg, and rated -5 to +10 Celsius. But that was from Czech.
Where do you buy your sleeping bags? Prices ? I plan to do most of my trips around Yunnan province. i don't think i'll see anything below -10 degrees.
Anyone else in Kunming?
Cheers.

try the french: http://www.decathlon.com.cn/EN/
they even have online shop http://decathlon.taobao.com/

Quality and value for money is good, but no shop in Kunming, have in Chengdu.

Yeah it's probably worth taking a visit to Chengdu to pick up supplies like that. Plenty of outdoor stores there since it's the "Gateway to the West". They have a Decathalon in the southern part of the city and a smattering of outdoor stores all over.

CC