British Columbia - Canadian Province Oval decal by Flagline.com. $2.25. 3" x 4.5" oval decal. Our 3" x 4.5" reflective decals let you proudly display the British Columbia flag and the Canadian flag on either side of the province's abbreviation. The decals have a self-adhesive backing for easy application on the exterior of a car or motorcycle.. Save 43% Off!