HEATBLOCK KALCT, which is a hot topic in crowdfunding, is finally in stock. An ultra-lightweight long umbrella with an astonishing lightness of 250 grams made of light-shielding heat-shielding fabric with a light-shielding rate of 99.99% or more and a UV cut rate of 99.9% or more. HEATBLOCK has a two-layer structure in which a light-shielding film is bonded to the back of the fabric, and with this structure, Ambel has achieved a light-shielding rate of 99.99% or more (the highest value) and a UV shielding rate of 99.9% or more. As long as the fabric is not torn, the shading effect is semi-permanent. HEATBLOCK KALCT has an umbrella frame structure that can withstand wind speeds of up to 14 m/s by optimizing the combination of materials and part sizes.