• Always wear
  • Pull the clip
  • Hold a buoy
  • Go to a safe place
  • SOS
  • Playing with S tube

is lifesaver in the water.

is ready.

Where can I use?

  • open water
  • pool
  • snokeling
  • surfing
  • windsurfing
  • kite surfing
  • canoeing
  • rafting
  • rowing
  • jet sking
  • waterskii
  • fishing




  • S tube is the guardian of water sports.
  • Hand-held life saving buoy with 100% original technology
  • It is a portable product that can be easily used by pulling the pin
  • Semi-permanent use by replacing the internal CO2 cartridge
  • Essential items to enjoy triathlon, open swimming, windsurfing, kiteboarding, surfing, playing in the water, and skin scuba
  • Suitable for any marine sports as it can be worn horizontally or vertically with a belt type

※ It is not S tube personal flotation equipment. (PFD)

※ Please do not use as a life jacket substitute.

기내 반입 규정 + Carrying by airplane +



  • Buoy

  • Inflator & CO2 Cartridge

  • 1 bag : case to put buoy
  • 2 clip : device to fasten the bag
  • 3 belt : straps that can be wear on the body
  • 4 string : connect to the bag and the buoy
  • 5 whistle : device to signal danger
  • 6 Life Tube : Floating buoy
  • 7 Mouthpiece : A device to blow or blow the air out of the buoy
  • 8 Inflator : device to manually inflate buoy
  • 9 CO2 cartridge : device to inflate the buoy
Size Material CO2 Cartridge Buoyancy
15 x 10 x 7 Cm, 450g Nylon, TPU 16g 75N

For you

  • Military
  • Open swimming
  • Surfing
  • Stand Up Paddling
  • Fishing
  • On board
  • Skin scuba
  • Snorkeling





My name is Jacob Cho and I have 2 children.
I was experienced a water emergency and my mind was confused.
So I let my children learn to swim.

Just learn to swim doesn’t get you out of a water emergency. So I developed S tube.

S tube is a life-saving product in a water emergency.
Now you just have to play with the S tube.

NETF Inc. offers S tube on different sale platforms like online stores.
B2B requests are welcome.

NETF Inc. was founded in 2017. The company is located in Seoul, KOREA.