A pair of brown leather lace guards made of two layers of leather with fine stitching.
They have two central slots with fine stitching around their edges.
Spur straps would pass through these slots so that the guards could be positioned over the laces of military field boots
These guards are curved and quite rigid, they are probably 19th Century , later examples (such as those used in WWI) are usually simple single layers of leather with no stitching

Measurements :  3¼" (8.2cm) x 2½" (6.5cm)
Please ask for any other measurements that you require

Ref : Lace Guards