ANTI-SNAP DUBLE PRTECTIN: have heavy duty prtective nyln sleeves that makes them safer than traditinal eercise . This means Nyln Sleeve prtects user frm injury if tubing breaks r snaps back. Perfect fr use in strength-cnditining, , and physical rehabilitatin. MULTIPLE USES: Nt nly fr daily fitness wrkut but als supprtive during recvery frm leg, knee r back injuries (trn MCL and ACL, knee lacement, patella and meniscus rehab). Suitable fr wmen during pregnancy and t keep their bdy in shape after birth. Natural Late/Nyln Cver EC-FRIENDLY: Made f Ec-friendly natural late fr maimum strength which gives the maimum durability and resistance. Perfect fr use in strength-cnditining, , and physical rehabilitatin. Suitable fr all fitness levels. 13 PCS Package includes: 6pcs (Yellw-10LBS;Green-20LBS;Red-30LBS; Blue-40LBS; Black-50LBS;Gray-60LBS ), 2 dr anchr, 2 fam handles, 2 padded ankle straps, 1 Wrkut Guide Bk. Yu can even stack multiple tgether in any cmbinatin t increase resistance and fr a heavy wrkut. Length f Rpe is 140cm. FR ANY FITNESS LEVEL: ur eercise are clr-cded and individually labeled. The metal carabiner n the band can be used alne r stacked in any cmbinatin t achieve yur ptimal resistance level frm 10LBS t 210LBS.