Buy some gear4 sale

For sale;
Rab vapourise smock,blue/black small. exc' cond';£55 ono.
Buffalo special 6 smock, green medium size, vgc; £85 ono.
Marmot down jacket, small, exc' cond'; £100 ono.
OMM rucsac,classic 25, yellow/black,vgc; £50 ono.
Salomon s-lab sense 3 soft ground trainers, 7.5 uk, exc' cond'; £70 ono.
Hope Valley/ Peak district area.

Hi bogmaster I Might be interested in the Buffalo top if it is still available but I am unsure about the size, I had a look on their site and they use numbers not letters. I've sent a PM, any advise on what a medium size means in inches would be appreciated.