This practical solution from U.S. company Nite lze allows stretching a tents or tarps without need of knots. At the same time, it reduces the risk of tripping after dark as it is reflective.
Whenever you are going to camp or bivouac, set-up your tent or tarp using this Tent Line Kit. You don´t need to have any special knowledge about knots as fixing is provided by four lightweight plastic Figure 9 Cord Tighteners with four reflective green cords.
Reflective properties of Nite Ize Figure 9 reduce tripping after dark. Small dots along the length of the line effectively reflect the light of flashlights, headlamps and lamps.
Buy Reflective Tent Line Kit Figure 9 Nite Ize® for € 14