TACVASENMen's Lightweight Jacket Thin Sportwear Bomber Jacket Windbreaker Coat

Someone posted that the jacket was cotton although the description says Polyester? Also is it machine washable. Thanks

It's it warm?

i wear large size 40/42 but according to size chart listed here that would be a small. ? Thank you

Is this jacket true to the size chart? i'm a 39" chest so technically a s should fit me fine, if i trust the chart, which i'm wary of doing. any help