Is there a way to say an object is susceptible to being carried away by wind?

I'm trying to think of a word that describes the capacity of an object to be carried away by wind. In particular, I would like to know if there is an adjective that indicates an object could be easily moved in this way.

For example, I would want to be able to fill in the blank in the following sentence: "That umbrella is too ___ for you to let go of it in this wind."

blowy

readily blown about: blowy desert sand.

https://www.merriam-webster.com/dictionary/blowy

easily blown about: flimsy, blowy curtain material.

https://www.dictionary.com/browse/blowy

A blowy, corn-colored curl caught like a tendril and curled round the brim. (Hurst, Fannie)

https://www.vocabulary.com/dictionary/blowy

Note: Blowy also means windy (see first definitions in links above).

The adjective blowy is used to describe items such as umbrellas and tents (which are easily carried away by the wind if not properly secured), but building materials such as roof shingles and awnings are susceptible to wind damage (US, SE Region).

Whether something is likely to blow away or not depends on both its weight and surface area. For larger surface areas an object needs to be heavier to be less likely to be blown away. In regular conversation, however, only the weight side of the equation is mentioned (probably because umbrellas need a lot of surface area).

Thus, the word you should use is either light or lightweight. Here are some examples of what I mean:

• I'm just afraid the umbrella will be too light weight to withstand the wind and/or I won't be able to to get it to stay in the ground. —Tips for shade/umbrellas at the beach

• The pole material seems very thin and the umbrella is actually too light. The slightest breeze will knock it down. —Review for Le Papillon 8-Foot Lotus Patio Umbrella Wind Resistant

Alternatively, you can instead describe the wind as being too strong.