Replicas of real horns, these are much lighter than the real thing! However since they are made from natural horns, there can be differences in size/symmetry/details.
While these are very durable, if enough pressure is applied they can break. Heat can also cause warping. These are all solid cast resin.
Smaller antlers can be mounted to headbands. However larger ones will need a sturdier base, and are best applied in a manner that they can be removed for storage/travel. (Using screws/bolts in order to attach)