Silirings are round silicone stow bands for your suspension lines. Tested in the field using extreme jumping conditions, silicone has proven to be far superior to other products when used in adverse skydiving environments-- hot/cold/humid/dry. They do not get sticky or dirty and have a comfortable elasticity. Though they seem to be pricey initially, they will last for an indefinite number of jumps when used in normal jumping conditions and quickly pay for themselves with ease of use and low maintenance.
Silirings come in various sizes. Please see the chart for the best size for your canopy. Silirings work great on HMA, Vectran, and Spectra lines because of how small they are in circumference.