Babawick Bristle Wick Types are high quality insulation solutions that provide air, dust, sound and pest insulation by perfectly closing the gaps in doors, windows, sliding systems and cabinet doors. Finned Bristle Wicks, this model, which has a thin plastic strip (fin) right in the middle of the hair structure, offers extra high air, water and sound insulation compared to standard wicks. Thanks to the fin barrier, wind and sealing performance are maximized and directly contributes to heat savings.