It is a green bag.
le sac vert means 'the green bag' in French.
Sac a dos vert
un sac is a bag in French.
"bag" is "sac" in French.
bag= sac
Un sac à dos noir is a black backpack in French.
It means 'in my bag' in French. Dans mon sac j'ai ... means "In my bag I have ..."
sac à dos
Mon sac est énorme means "my bag is enormous/huge" in French.
un cul-de-sac (literallly "bag's end") is a dead end street or situation in French.
"Sac" in French is spelled as "s-a-c."
Did you mean "purse"? A purse is 'un sac' (masc). My purse is 'mon sac'.