Jaybird ear tips; memory foam ear tips for most Jaybird earphones (see list); Jaybird replacement ear tips

6 pairs per size (assortments include 2 pairs of each size) 5.4mm (.21') connector hole compatible up to 6.9mm diameter (.27') Slow rebound memory foam with silicone connection tube Ear tips are 10.8mm tall (.42') Base diameters: Small 10.5mm (.41') Medium 12.5mm (.49') Large 13.5mm (.53')