NRAA wind flags are specified as 4.2m long x 1.8m depth (pole) and .3m depth (tail)

Material is polyester weighing 150 grams per square metre (gsm)

The final weight depends whether the material is hand or machine dyed

Machine ~ 170gsm, hand ~ 160gsm

Flag area 4.2 x 1.05m = 4.41m2 x 10 = 44grams difference