gorgeous, excellent quality, new H&M STUDIO grey knit midi skater dress with full skirt part, size S,M, 36EU, 8-10UK, 6US - on the tag it says just 36EU, 6US wich equals to 10UK. the dress is made of great quality stretch ribbed knit material and in my opinion it might fit size M person too, but check the exact measurement lower in this text first. 
features: stretch, extra long sleeves with slits, mock neck, contrast ribbed knit (upper part is vertical ribbed, skirt part is horizontal ribbed) 
model: H&M STUDIO F/W2016
colour: nice elegant grey (NOT blueish grey as it might look on some of the photos). it is subtle salt&pepper style grey, not too bold.
material: great feel & look ribbed knit material (viscose, elastane)
lining: no

size S,M, 36EU, 8-10UK, 6US - on the tag it says just 36EU, 6US wich equals to 10UK. the dress is made of great quality stretch ribbed knit material and in my opinion it might fit size M person too, but check the exact measurement below too and message me in case of doubts: 
exact measurements
total length: 107 cm / 42. in. - probably a bit shorter while on, depending on the body type
shoulders, from top of the one seam to the other: not stretched = 38 cm /14.96 in. - can be stretched up to 58 cm / 22.83 in.
from armpit to armpit: not stretched = 39 cm /15.35 in. - can be stretched up to 59 cm / 23.22 in.
waist, flat across: not stretched = 32 cm / 12.59 in. - can be stretched up to 47 cm / 18.50 in.
hips, flat across: 60 cm / 23.62 in. - measured 25 cm / 10 in. below the waist line and can be stretched a lot
sleeves: outer = 66 cm / 25.98in., inner = 57 cm / 22.44 in.
skirt part length: 69 cm / 27.16 in.
if you need more details, message me, will respond asap

condition: new, unworn, clean, no pulls, no holes. i just shortened the dress, but then it was too short, so i prolonged it again (i attached the cut off part / hem again) - it looks nice, structured. the attached part can be removed or i can do it for you, let me know ( length of dress without the attached part is 100 cm / 39.37 in.) last photo displays the original look of the dress.