Abstract: BRIEFS WITH LUMBAR PROTECTION includes an upper lumbar protector of a seamless continuous circular fabric, made up of an outer tubular portion and an inner tubular portion, both portions being joined by their upper ends through an intermediate reinforcing portion of a same weave and by their lower ends through a union by transfer. Both portions delimit an intermediate air chamber and they are extended in a tubular portion in the shape of briefs, with two openings through which the wearer's legs pass. The outer tubular portion, of high bidirectional elasticity, shapes the outer surface of the lumbar protector and the inner tubular portion that shapes the inner surface includes a fibers with silver ions that provide anti-microbial and anti-static properties.

Abstract: Lumbar protector with underpants incorporated, including a pair of underpants; and a closed band sewn to an upper part of the pair of underpants and having a band height such that the band covers at least lumbar vertebrae of a user, the band being produced in natural textile fibers with a significant caloric effect and at least ten per cent selected from the group consisting of elastomeric polyurethane, rubber and similar fibers, and the lumbar protector has either natural colors of the fiber, or colors from treatment with natural dyes.