Rab mens interval tee the interval tee is a light weight fast drying technical tee designed for active use in varied conditions the polyester fabric of the interval tee is treated with polygiene an active odour control technology which maintains freshness for the lifetime of the garment the interval tee features a polyester grid knit flatlock low bulk seams and 35 upf with a regular fit the interval tee can be worn as a baselayer in cold conditions or as a lightweight technical t