1- Smooth impact resistant P.V.C. shell
2- No contact with abrasive rough cement
4- Multiple vinyl liners compatibility
1- Puncture proof interior
2- Non-porous, smooth cleaning surface
4- Tile and mosiac ready
*Polar Pool Systems warranties concrete will never crack to interior of pool wall.
*Insulation will never saturate, deteriorate or corrode.
*See warranty for details.