Sun helmet, sola topi, rigid construction, deep brim at front and back but slightly narrower at sides, made out of pith of East Indian swamp plant covered white twilled cotton treated with whitening, brim edged light tan leather, domed crown with four ventilation holes and narrow tan leather strap that continues through to inside to become adjustable chinstrap, crown trimmed with fine white cotton pleated to form deep hatband, underside of brim covered green fabric, inner sweatband of tan leather and white cotton Aertex with drawstring for adjustment, held in place with leather loops and metal clips, sweatbanc printed Comfortease, Royal Letters Patent No 228467, Adopted by HM Govt, crown lined silvered paper printed Coolair Aluminex, Made in England, Royal Letters Patent No 397985 7/9/33, 10-15 degrees Cooler, Recommended by the Tropical Research Department, approx length overall 335mm, approx height 140mm, c1930s
