No.3 Jiffy Lite Padded Envelopes (F3-220x330mm). Envelope Size: 220X330mm. White Bubble Padded Envelopes. 10-Pack. Jiffy/Mail Lite F3 220×330. Jiffy Lite F3 220X330 Pk10. Economical and lightweight postal bag. Fully lined with AirCap® barrier sealed for superior protection. Self-seal strip on top flap. Easy to write on. Excellent label adhesion.