The Shoulder Sleeve Insignia of the Kalmius Battalion; an anti-government pro-independence Battalion in eastern Ukraine.Text states at the top "Kalmius" (КАЛЬМИУС)
On the banner on the left hand side it states "Special Division" (СПЕЦПОДРАЗДЕЛЕНИЕ)
The banner on the right hand side states "Ministry of Defense" (МИНИСТЕРСТВО ОБОРОНЫ)
In the center banner it states "DPR" (ДНР)
Own work. Based on SSI seen here.