Clothing

It’s the average space suit everybody gets if going to leave space. It’s very customizable, but most people don’t know this. It’s incredibly durable and stretchy, so if you grow in any way, it will still fit. Except for the helmet, but if your head grows, you should see a doctor.
A regulation suit is white, and is made of a cloth that acts as a filter, taking the air one breathes out and making it breathable again. It’s helmet, gloves, boots, jacket, and pants are all detachable and able to be mix and matched, if you so desired. They attach via strong electric magnets.
In the wristband is a helpful AI known as Hayden. Hayden is androgynous, and is pretty much a futuristic Siri. If you don’t know where you are, you can ask Hayden. If someone gets hurt and you don’t know what to do, you can ask Hayden.
The helmet visor glass can change filters, so it can act like giant sunglasses, night vision goggles, heat vision goggles, it can zoom in at what you are looking at, and Hayden can put images on it if you ask them to, like an object you might be looking for, but have never seen before. Hayden can also put a line pointing the way you need to go through the visor.
The helmet has a radio on the inside, and a light on the outside.
There is an emergency pack on the back of the suit, just in case. It has first-aid things, duct-tape, and a portable replicator.

Fabric that was designed based on leaves, and uses solar power to keep the suit working properly, takes what you breathe out and makes it breathable again.

Helmet: 1 lb
Boots: 1.5 lbs
Rest of the suit is pretty lightweight.

Depends on what you mean. Your suit was probably made the day you booked a space flight, the suit was invented in 2187

Science is just magic that can be explained.