Is it fully waterproof?

It is described as water-resistant, not waterproof. It sheds drizzle and light rain, but a polyamide blend without a sealed membrane will wet through in prolonged or heavy rain.

No. It has a stand-up collar with black and white drawstrings instead of a hood, so bring a hat or umbrella for real rain.

It has a regular fit and falls just below the hips. That leaves room to layer a fleece or sweater underneath without sizing up.

What is the closure setup?

A full zip runs under a snap-button placket, which adds a second barrier against wind and rain. The placket means two steps to open and close.

Are the pockets secure?

There are two front pockets with snap closures, which keep keys and a phone from sliding out during activity.

Is it good for running or cycling?

The reflective chest stripe helps visibility in low light, but the below-hip length and snap placket suit walking and commuting better than high-output sport.