There’s an almost secret-society-like quality to wearing A.P.C.—you don’t have to blast it out to let the world know that you’re part of the club. This casual attitude and never-trying-too-hard edge are the very premise of the A.P.C. x goop collaboration: five universally perfect denim fits, stripes that salute the French label’s heritage, and subtle flourishes that have dictated G. Label drops for years.