Color: Blue and Red; 2 pairs of earplugs per pack with carrying case; Four-flange design features noise-blocking fins that eliminate "plugged up" feeling, create a better more comfortable seal, and provide optimal protection; Rounded flanges and tapered shape fit better in the ear canal; firm stem allows for proper insertion and easy removal; Red cord helps prevent loss/misplacement by draping easily around neck for temporary storage; Noise Reduction Rating (NRR): 27dB