Abstract: An adjustable, shoulder-strap assisting device having an elongate support member with a non-smooth surface on a shoulder engaging side. The elongate support member also has a deformable, rigid insert disposed therein such that the support member is capable of being custom fitted about the shoulder of the user in a non-slipping position. The shoulder-strap assisting device conforms to the contour of the user's shoulder and receives the shoulder strap of a backpack, golf bag, suitcase or the like and prevents the shoulder strap from moving relative to the device such that the load carried by the strap does not shift on the shoulder of the user.