diff --git a/test/invariants/BaseInvariants.sol b/test/invariants/BaseInvariants.sol
index b914ffc..6128cdf 100644
--- a/test/invariants/BaseInvariants.sol
+++ b/test/invariants/BaseInvariants.sol
@@ -17,6 +17,9 @@ import {DonationHandler} from "./handlers/DonationHandler.sol";
 // Mocks
 import {MockSTETH} from "./mocks/MockSTETH.sol";
 
+/// @notice Base invariant test contract
+/// @dev This contract should be used as a base contract that hold all 
+/// invariants properties independently from deployment context.
 abstract contract Invariant_Base_Test_ is Invariant_Shared_Test_ {
     //////////////////////////////////////////////////////
     /// --- VARIABLES
@@ -52,6 +55,7 @@ abstract contract Invariant_Base_Test_ is Invariant_Shared_Test_ {
             * Invariant C: previewRedeem(∑shares) == totalAssets
             * Invariant D: previewRedeem(shares) == (, uint256 assets) = previewRedeem(shares) Not really invariant, but tested on handler
             * Invariant E: previewDeposit(amount) == uint256 shares = previewDeposit(amount) Not really invariant, but tested on handler
+            * Invariant L: ∀ user, user.weth + previewRedeem(user.shares) >=~ initialBalance , approxGe, to handle rounding error on deposit.
 
         * Withdraw Queue:
             * Invariant F: nextWithdrawalIndex == requestRedeem call count
diff --git a/test/invariants/BasicInvariants.sol b/test/invariants/BasicInvariants.sol
index c641bd6..378485c 100644
--- a/test/invariants/BasicInvariants.sol
+++ b/test/invariants/BasicInvariants.sol
@@ -12,6 +12,10 @@ import {OwnerHandler} from "./handlers/OwnerHandler.sol";
 import {DonationHandler} from "./handlers/DonationHandler.sol";
 import {DistributionHandler} from "./handlers/DistributionHandler.sol";
 
+/// @notice Basic invariant test contract
+/// @dev This contract holds all the configuration needed for the basic invariant tests,
+/// like call distribution %, user configuration, max values etc.
+/// @dev This is where all the invariant are checked.
 contract Invariant_Basic_Test_ is Invariant_Base_Test_ {
     //////////////////////////////////////////////////////
     /// --- CONSTANTS && IMMUTABLES
diff --git a/test/invariants/handlers/BaseHandler.sol b/test/invariants/handlers/BaseHandler.sol
index a7112a4..8714990 100644
--- a/test/invariants/handlers/BaseHandler.sol
+++ b/test/invariants/handlers/BaseHandler.sol
@@ -6,6 +6,10 @@ import {Vm} from "forge-std/Vm.sol";
 import {StdUtils} from "forge-std/StdUtils.sol";
 import {StdCheats} from "forge-std/StdCheats.sol";
 
+/// @notice Base handler contract
+/// @dev This contract should be used as a base contract for all handlers
+/// as this it holds the sole and exclusive callable function `entryPoint`.
+/// @dev Highly inspired from Maple-Core-V2 repo: https://github.com/maple-labs/maple-core-v2
 abstract contract BaseHandler is StdUtils, StdCheats {
     //////////////////////////////////////////////////////
     /// --- CONSTANTS && IMMUTABLES
diff --git a/test/invariants/handlers/DistributionHandler.sol b/test/invariants/handlers/DistributionHandler.sol
index 7bb11cc..ded559c 100644
--- a/test/invariants/handlers/DistributionHandler.sol
+++ b/test/invariants/handlers/DistributionHandler.sol
@@ -1,8 +1,12 @@
 // SPDX-License-Identifier: MIT
 pragma solidity 0.8.23;
 
+// Contract
 import {BaseHandler} from "./BaseHandler.sol";
 
+/// @title Distribution Handler contract
+/// @dev This contract should be the only callable contract from test and will distribute calls to other contracts
+/// @dev Highly inspired from Maple-Core-V2 repo: https://github.com/maple-labs/maple-core-v2
 contract DistributionHandler {
     //////////////////////////////////////////////////////
     /// --- CONSTANTS && IMMUTABLES
diff --git a/test/invariants/handlers/OwnerHandler.sol b/test/invariants/handlers/OwnerHandler.sol
index c5ff255..d392dcd 100644
--- a/test/invariants/handlers/OwnerHandler.sol
+++ b/test/invariants/handlers/OwnerHandler.sol
@@ -28,10 +28,6 @@ contract OwnerHandler is BaseHandler {
     uint256 public immutable priceScale;
     uint256 public constant MIN_TOTAL_SUPPLY = 1e12;
 
-    ////////////////////////////////////////////////////
-    /// --- VARIABLES
-    ////////////////////////////////////////////////////
-
     ////////////////////////////////////////////////////
     /// --- VARIABLES FOR INVARIANT ASSERTIONS
     ////////////////////////////////////////////////////
diff --git a/test/invariants/shared/Shared.sol b/test/invariants/shared/Shared.sol
index 1d9e29e..53a4463 100644
--- a/test/invariants/shared/Shared.sol
+++ b/test/invariants/shared/Shared.sol
@@ -17,6 +17,8 @@ import {MockLidoWithdraw} from "../mocks/MockLidoWithdraw.sol";
 // Interfaces
 import {IERC20} from "contracts/Interfaces.sol";
 
+/// @notice Shared invariant test contract
+/// @dev This contract should be used for deploying all contracts and mocks needed for the test.
 abstract contract Invariant_Shared_Test_ is Base_Test_ {
     address[] public users;
     //////////////////////////////////////////////////////