Being a former goalie, albeit of a questionable quality, I can give some insights to gloves. I used to love shopping for gloves, and the quality and grip greatly varies. Some gloves fit some hands and others fit other hands. I have rather short fingers but a fairly big palm, so some gloves just didn't fit me. Wearing gloves that are too large is nothing but disadvantagous. You lose grip, dexterity and perhaps most importantly feel. You also need to throw the ball, so having gloves that are too big will make it very difficult to make good throws, just like boots that are too big make it difficult to pass the ball well. Incidentally, you could make a claim that a goalie should wear three sizes too large shoes, but it just doesn't work - the same with gloves. You need the feel, the feel!