Sunflake folding storm umbrella at EUR 29.99: rated to 140 km/h, 52 above the top of KNMI force 9

An October morning, a forecast of force 7, and a folding umbrella that turns inside out the moment you open it outside the station: in a Dutch autumn an umbrella is usually beaten by the wind rather than the rain. The Sunflake folding storm umbrella is EUR 29.99 on bol.com, rated 4.4 from 144 reviews, in stock and sold by Sunflake NL itself; the page shows no struck-through price, so this is not a discount. The listing gives a 96 cm diameter, a weight of 390 g, nine reinforced resin ribs on a metal frame, and a wind-tunnel rating of 140 km/h.

Sunflake is the travel-gear brand of Sunflake BV in Eindhoven, whose own shop mostly sells compression packing cubes and cooling backpacks, and the storm umbrella sits in its Sunflake Paraplus range on bol.com. So how do you use that 140? The KNMI Beaufort table converts each force into a 10-minute average wind speed: force 7 is 50-61, force 8 is 62-74, force 9 is 75-88 and force 10 is 89-102 km/h. The sum is the umbrella rating minus the top of the forecast force, which gives the margin. At force 9 that is 140 - 88 = 52; the K&L storm umbrella on bol.com, rated 100 km/h, gives 100 - 102 = -2 at force 10, which is already short.

The margin is for the umbrella, not the person holding it. The same KNMI table says umbrellas are hard to hold at force 6 and walking or cycling into the wind is hard at force 7; it also notes that the force is a 10-minute average and gusts run higher, so if your weather app shows gusts in km/h, subtract those instead. The 140 is the seller's own wind-tunnel claim and no independent test is listed. Twelve of the reviews are one star, 12 / 144 = 8.3%, against 1 / 90 = 1.1% for K&L, so the extra EUR 7.96 for K&L buys fewer bad reviews rather than a higher wind rating.

• Specs: 210T Teflon-coated polyester canopy, automatic open and close, protective sleeve and hard storage tube; a reflective double-canopy version costs EUR 32.99. (source 1)
• Comparison: K&L folding storm umbrella, EUR 37.95, rated 4.8 from 90 reviews, stated wind resistance 100 km/h. (source 2)
• Top of the scale: KNMI lists force 11 as 103-117 and force 12 as above 117 km/h, and applies the name storm on a one-hour average. (source 3, source 4)

Price

EUR 29.99 (bol.com, checked 12 September 2026)・reflective double canopy EUR 32.99

Rating

4.4 from 144 reviews (bol.com)

Specs

96 cm diameter・390 g・9 ribs・seller rating 140 km/h

Platform

bol.com (affiliate link, sold by Sunflake NL)

Checked

12 September 2026, on two bol.com storm umbrella pages, the KNMI Beaufort table and sunflake.nl

Hokimi field note: before heading out, take the gust figure from your weather app away from 140; while the answer stays positive you are inside the seller's rating, and the hard tube keeps the ribs from being crushed in a backpack. The bol.com link on this page is an affiliate link: Hokimi may earn a commission if you buy through it, at no extra cost to you.