look for a motorcycle neck protector / scarf / buff (basically just a tube of material but it works well and is comfortable)
http://cgi.ebay.co.uk/NECK-BUFF-SCOOTER-LAMBRETTA-VESPA-NECK-WARMER-FACEMASK_W0QQitemZ270397038471QQcmdZViewItemQQptZLH_DefaultDomain_3?hash=item3ef4eb5f87&_trksid=p3286.c0.m14&_trkparms=66:4|65:10|39:1|240:1318|301:0|293:1|294:200
http://cgi.ebay.co.uk/NECK-BUFF-TRIKE-BIKER-TRIKE-SNOWBOARD-SKI-HORSE-RIDING_W0QQitemZ310143682468QQcmdZViewItemQQptZLH_DefaultDomain_3?hash=item48360107a4&_trksid=p3286.c0.m14&_trkparms=66:4|65:10|39:1|240:1318|301:0|293:1|294:200
http://cgi.ebay.co.uk/NECK-BUFF-SCOOTER-LAMBRETTA-VESPA-NECK-WARMER-FACEMASK_W0QQitemZ270397038471QQcmdZViewItemQQptZLH_DefaultDomain_3?hash=item3ef4eb5f87&_trksid=p3286.c0.m14&_trkparms=66:4|65:10|39:1|240:1318|301:0|293:1|294:200
http://cgi.ebay.co.uk/NECK-BUFF-TRIKE-BIKER-TRIKE-SNOWBOARD-SKI-HORSE-RIDING_W0QQitemZ310143682468QQcmdZViewItemQQptZLH_DefaultDomain_3?hash=item48360107a4&_trksid=p3286.c0.m14&_trkparms=66:4|65:10|39:1|240:1318|301:0|293:1|294:200