The quality of the buckle is related to the safety of the baby. The buckle on the baby's waist stool strap must be selected for the strength of the baby. The strength of the buckle is easy to break, which may cause the baby to fall on the waist stool. High-strength buckles generally have a ‘咔嚓’ sound when buckled。
The size of the stool is not as big as possible. Too big to let the baby's legs fork too open, it is easy for the baby to slide off the side. Too small and unstable, the best size. The stool surface must be upturned, and the 30 degree upturned stool surface effectively keeps the baby sitting behind the waist stool parallel to the waist to prevent the baby from sliding down.
|
Material name |
Stability (degree of anti-aging) |
Structure density (hardness) |
Volatile (release of harmful substances)
|
cost
|
weight
|
|
Polyurethane pu |
high |
high |
no |
high |
medium |
|
Polyethylene pe |
Low (susceptible to moisture) |
Low (easy to deform) |
High (volatile formaldehyde, etc.)
|
low
|
low |
|
Polypropylene epp
|
Medium (afraid of chemical contact)
|
medium |
no |
medium |
low |
|
Fabric name
|
Strength (sturdy, not easily deformed)
|
Color fastness
|
Volatile (release of harmful substances)
|
cost
|
|
nylon |
high |
high |
low |
high |
|
Polyester
|
medium |
high |
low |
medium |
|
canvas |
medium |
medium |
medium |
mdeium |
|
cotton |
Low (easy to tear)
|
Low (easy to fade)
|
medium |
low |
|
structure type
|
Labor saving
|
flexibility
|
stability
|
cost |
wieght |
|
Shoulder waist stool
|
high |
low |
high |
high |
medium |
|
Shoulder waist stool
|
medium |
medium |
medium |
low
|
low |
|
Separate waist stool
|
low |
high |
low |
mdeium |
low |