!Radio Frequency Protective sleeping bagIdeal when travelling where the environment is unknownlightweight, easy to pack and washablecomfortable and roomyDesigned and Made in the UKBlocBag - screened sleeping bag The BlocBag provides individual screening from microwave radiation. This may be an ideal temporary solution when a canopy is not possible. This could be, for example, if you are in rented accommodation, and do not wish to screw a hook into the ceiling. It is also invaluable for those people wanting protection when visiting friends and relations, or when travelling on holiday or for business. It is lightweight, easy to pack, comfortable in both summer and winter, washable, and needs no external fittings. It is comfortably roomy, fitting all shapes and sizes, without feelings of constraint. The New Daylite fabric that protects your head also allows good visibility and breathability. The perfect travelling companion when you want RF protection wherever you are. NOT RECOMMENDED FOR PERMANENT USE AS WASHING BEYOND 50 TIMES WEAKENS THE PROTECTIVE PROPERTIES