The 
NUPROL Two Point Bungee Sling in green
 is an adjustable sling designed for airsoft use, constructed from heavy-duty 1000D Cordura fabric
 
Key features of the sling include:
Bungee sections: Flexible bungee sections at each side of the sling help absorb the shock and take the weight off your shoulders when the weapon is dropped or transitions occur.
Quick detach buckles: Both ends of the sling are equipped with quick-release polymer buckles, allowing you to quickly and easily detach your weapon or remove the entire sling.
Attachment points: It features H&K style metal clips for secure attachment to weapon sling points.
Versatility: The design allows for use as both a two-point sling (attached at the front and back of the weapon) and can be converted into a single-point sling by clipping the metal clasps together into a D-ring at the other end.
Adaptors: It includes two strong cloth adaptors for use on weapons where the existing sling loops are too small for the metal clips.
Adjustable: The sling is fully adjustable to fit various body types and work with bulky gear like body armour.